Crushed Tonic Banana Milk collagen pouch beside a glass of banana milk
LIVE · today · Banana Milk +387 cups

Tastes like dessert.
Works like skincare.

Find Your Flavor → Read Sally's Story
★★★★★ 4.9 · 2,400+ reviews · 100,000+ in the Crush Club
Skin Hydration
+138%
vs. baseline · clinical · daily use
Clinical8 weeks
★★★★★4.9 · 2,400+
"I'm on my 5th batch. I blend it into my smoothies every morning."
JJulia Fox · verified
COME BACK FOR MORE · COME BACK FOR MORE ·
1 in 2come back

Three things to know

It tastes like a Korean café.

Not fish. Not chalk. Not a "wellness drink." Like the banana milk you'd order in Seoul, with five grams of skincare quietly inside.

It actually absorbs.

Most collagen is too large for the body to use. Ours is hydrolyzed to 4,000 Daltons — half the size of Vital Proteins — so the peptides actually reach your skin.

It works in eight weeks.

In clinical studies, daily use led to 138% more hydrated skin and 153% more elasticity. No miracle promises. Just the boring science, done right.

Why it happens

Your collagen peaks at 25.
Then it quietly fades.

From your mid-twenties, your body makes about 1% less collagen every year. That slow decline is exactly what you start to notice in the mirror — fine lines settling in, wrinkles deepening, dark circles becoming harder to hide. The firm, bright support structure beneath your skin is thinning out, year after year.

25
30
40
50
60
Your natural collagen, by age

The good news? Collagen can be replenished. You just have to feed it amino acids.

A fact worth knowing

Topical collagen
doesn't work.

Your moisturizer sits on the outer layer of skin — the part that's already dead. Collagen lives underneath, in the dermis, where serums can't go. To rebuild it, you have to feed it from the inside. The science on this is settled.

01
Topical doesn't work. Collagen molecules in creams are too large to penetrate past the surface. They moisturize. They don't rebuild.
02
Collagen must be ingested. The only way to actually raise collagen in the dermis is to feed it through the bloodstream — which means drinking it, daily.
03
But most collagen is garbage. Too-large peptides your body can't absorb. Fishy aftertaste. Chalky textures. Fillers and gums. A tub you hide in the cabinet.

But not just any ingestible collagen will do. Three things have to be true.

The answer

Ingestible collagen works.
If it's high quality.

Drinking collagen is the only way to rebuild it. But most ingestible collagen still fails — because most brands miss one of these three.

01 It must be effective

Small enough
to actually absorb.

Above 5,000 Daltons, the molecules are too large to cross the gut lining. Peptide size decides whether the collagen reaches your skin at all.

✗
Most collagen~10,000 Daltons. Too big to absorb. Most of it never reaches the dermis.
✓
Crushed Tonic4,000 Daltons. Half the size of average collagen brand. Actually crosses the gut lining intact.
02 It must be premium

Clean source.
Clean process.

Cheap collagen carries the supply chain with it— heavy metals from polluted oceans, hormones from feedlot cattle, fillers and gums to mask cheap inputs.

✗
Most collagenUntraceable source. Fillers, gums, anti-caking agents. Rarely 3rd-party tested.
✓
Crushed TonicTraceable to the exact fish. 3rd-party tested. Halal & Kosher. Zero fillers.
03 It must taste good

Or you'll
stop drinking it.

Collagen only works if you drink it daily— and you only drink it daily if you actually want to.

✗
Most collagenFishy aftertaste. Chalky texture. Most brands only treat flavor as an afterthought.
✓
Crushed Tonic11 Korean café flavors. 0 to 3g sugar. 1 in 2 customers repurchase — highest in the category.
As Seen on TikTokKorean Café InspiredClinically Backed PeptidesZero Fishy AftertasteHalal & Kosher CertifiedThird-Party Tested11 Café FlavorsChef-Crafted+138% Skin HydrationHalf the Dalton SizeTastes Like Dessert As Seen on TikTokKorean Café InspiredClinically Backed PeptidesZero Fishy AftertasteHalal & Kosher CertifiedThird-Party Tested11 Café FlavorsChef-Crafted+138% Skin HydrationHalf the Dalton SizeTastes Like Dessert
Stocked at · written about · drunk every morning
2,400+
★ Verified Reviews
1 in 2
Come back for more
14M+
TikTok views
11
Café flavors
Tap a flavor · Watch it pour

Build your cup.

Pick a crush and we'll pour it for you. When it looks right, drop it straight in your bag.

Banana Milk pouch🍌 Banana Milk
Vanilla Bean pouch🤍 Vanilla Bean
Strawberry Milk pouch🍓 Strawberry Milk
Matcha pouch🍵 Matcha
Coffee pouch☕ Coffee
Banana Milk pourVanilla Bean pourStrawberry Milk pourMatcha pourCoffee pour
Banana Milk
Low sugar (~3g per drink) + available in sugar-free
← Tap any flavor to pour it →
Premium · the difference

Why our collagen
belongs on your counter,
not in your cabinet.

Premium isn't a sticker. It's a stack of decisions: what the peptide size actually is, what's tested for, what's left out, what it costs to make. Here's how every cup is built — and how the tub you stopped using compares.

Peptide size, to scale.

Lower = more absorbable
Standard collagen Vital Proteins · most tubs
10,000Daltons
Crushed Tonic Hydrolyzed · marine + bovine
4,000Daltons
≈ Half the size

Anything above 5,000 Daltons is too large to pass through the gut lining intact. Below it, peptides cross into the bloodstream and reach the dermis. That's the entire reason it works.

The tub you stopped using
✗
Fishy. Chalky. Slightly off.
The reason it's been in your cabinet since February
✗
White plastic tub energy
Designed to be hidden, not photographed
✗
Peptides too big to absorb
Most of it never reaches the skin you bought it for
✗
Feels like punishment
A daily chore disguised as self-care
Crushed Tonic ✓
✓
Tastes like the café version
1 in 2 customers come back — the highest in the category
✓
Lives on your counter
Designed for your kitchen, not your medicine cabinet
✓
4,000–5,000 Dalton hydrolyzed peptides
Half the size of Vital Proteins · Marine + bovine, sized for actual bioavailability
✓
Feels like the best part of 7am
The cup you keep buying because you want to
02 · It actually absorbs

Most collagen is too large
for your body to use.

Ours is hydrolyzed down to 4,000 Daltons — half the size of Vital Proteins — small enough that the peptides actually reach your skin instead of getting broken down before they're absorbed. That's the difference between drinking collagen and drinking expensive protein.

✓
4,000 Dalton peptides · half the size of Vital Proteins
✓
+138% hydration, +153% elasticity in 8 weeks (clinical)
✓
Nostalgic flavors with 0 to 3g sugar per drink
✓
0% fillers, 0% grit, 100% glow
Shop Now
+138%
Skin hydration · 8 weeks
+153%
Skin elasticity · 8 weeks
4,000 Da
Half the size of Vital Proteins
−9.73%
Wrinkle depth reduction

*Based on clinical studies of hydrolyzed collagen peptides

🔬Collagen 💧Elastin
EPIDERMIS DERMIS Collagen Elastin HYPODERMIS AGING SKIN ↓ YOUTHFUL SKIN ↑
How it reaches your skin

Youthful skin starts deep.

Collagen is the key protein that gives your skin structure and strength. Drinking collagen has been shown to support your body's natural collagen production, helping your skin appear firmer, more hydrated, and smoother with fewer visible fine lines.

Collagen is the primary structural protein of the dermis, responsible for skin strength, integrity, and elasticity. With age, endogenous collagen production declines — hydrolyzed collagen peptides may act as bioactive signals that stimulate fibroblast activity and support new collagen synthesis.

👩‍⚕️
Dr. Tess Mauricio, MD
Celebrity & Board Certified Dermatologist
"Hydrolyzed collagen peptides are clinically shown to reach the dermis and stimulate fibroblast activity — improving skin hydration and elasticity from within."

The processHow every cup is made.

High absorption hydrolyzed marine collagen peptides at 4,000–5,000 Daltons — half the size of Vital Proteins — free from metals, fillers, and additives. Fully traceable down to the exact fish. 3rd-party tested for purity, safety, dissolvability, and absorption.

01
No fillers, additives or preservatives
Pure formula with nothing added
02
Clinically proven & tested
Science-backed, peer-reviewed efficacy
03
Tested for 0 metals
Third-party verified heavy-metal free
04
Honest & sustainable sourcing
Ethical supply chain, always
05
Sterilized & filtered twice
Double-process purity standard
GMP CERTIFIED
06
Traceable from source to batch
Full chain of custody documented
07
Truly flavorless & dissolves well
Seamlessly mixes into any drink
08
Made in the USA
Domestic quality & safety standards
GMP CERTIFIED
03 · It works in eight weeks

Five studies. 376
women. One conclusion.

No miracle promises. Just hydrolyzed collagen peptides — the same kind in every Crushed Tonic cup — measured under clinical conditions. Skin elasticity meters, wrinkle-depth imaging, dermal hydration probes. The boring science, done right.

Study 1 12 weeks · n=64

Method: Skin elasticity measured by cutometer — quantifying the time and quality of skin's ability to return to its original state after stretching.

At week 12, regular intake led to:
  • +18%Increase in skin firmness
  • −27.2%Decrease in wrinkle depth
  • +22.8%Increase in skin hydration
Double-blind, placebo-controlled · J. Med. Food
Study 2 12 weeks · n=72

Method: Wrinkle shadows measured via high-resolution facial imaging. Light reflection across the skin surface tracked weekly to assess texture and depth.

At week 12, regular intake led to:
  • −9.73%Average reduction in wrinkle shadow length
  • Visibly smoother skin texture
  • More even light reflection — firmer surface, reduced wrinkle depth
Skin Pharmacology & Physiology · Peer-reviewed
Study 3 12 weeks · n=95

Method: Perioral and Crow's feet wrinkles studied on 95 healthy women aged 55–60. Skin complexion, elasticity, and wrinkle severity scored weekly.

At week 12, regular intake led to:
  • Improved skin elasticity
  • Reduced facial wrinkle appearance
  • Improved skin complexion homogeneity and radiance
  • Decrease in mean score of facial wrinkles
Nutrients Journal · Randomized controlled trial
Study 4 8 weeks · n=60

Method: Skin deformation under controlled mechanical stress measured alongside the time required for the skin to return to its original shape.

At week 8, regular intake led to:
  • +28%Increase in skin hydration
  • −14%Decrease in fine line visibility
  • Improved skin radiance and tone evenness
Marine Drugs · Double-blind, placebo-controlled
Study 5 16 weeks · n=85

Method: Hair tensile strength and growth rate measured monthly using digital trichoscopy. Nail growth and brittleness scored independently.

At week 16, regular intake led to:
  • +12%Increase in hair strand strength
  • −42%Reduction in nail brittleness
  • Faster nail growth across all participants
Journal of Cosmetic Dermatology · Peer-reviewed
← Swipe through the studies →
30 drinks in

After one box,
here's what changes.

One stick a day. Thirty days. Most customers notice these four shifts before the box is empty — and the people around them notice first.

Skin
The "did you change something?" effect. Plumper, more even, less of that drained 8am look. Works from the dermis up, where your $90 serum can't.
+28% hydration · 30 days
Hydration
Not the kind your moisturizer fakes. The kind that shows up under your eyes in the morning — when your skin used to look thirsty and now it doesn't.
Visible from week 4
Hair
Less breakage in your brush, more shine at the ends, the kind of fullness no dry shampoo can fake. Your keratin protein chain, finally getting fed.
Visible from weeks 6–10
Nails
The kind that grow past the nail bed without splitting. Less peeling, less weird ridges. The kind you stop hiding under gel manicures.
Stronger growth cycle
The Glow
The lit-from-within thing your favorite It-girl never explains. Not a highlighter, not a filter — actual dermal-level support, every morning, in a cup.
The whole reason
Wellness
Gut-supportive, low-sugar, no fillers, no junk. The rare habit that earns its place in your morning — and the rarer one that stays there past February.
Halal · Kosher · GMP
Before & after

The same skin.
30 days apart.

97%
Skin vitality & texture
87%
Skin hydration & radiance
100%
Skin firmness & less wrinkles

*Consumer Perception Study, 100 people, ages 18–31

DAY 30
DAY 1
‹›
← Drag →
Conditions Supported

Skin concerns
we address

Clinically formulated collagen targets visible skin conditions from the inside out.

Acne & RosaceaDark CirclesEczemaFine LinesSkin HydrationSkin FirmnessHyperpigmentationDullnessPore Size
Sally Kim
Sally Kim
Founder, Crushed Tonic
▶ Watch Sally on QVC
The story

The kitchen fire
that became a cup.

Sally Kim had a kitchen accident in her twenties. A burn bad enough to change her relationship with her skin forever. Her dermatologists told her to drink collagen daily — so she tried every brand on the market, and every single one tasted like fish, chalk, or punishment.

So she flew to Korea. Seven years with Korean labs, flavor scientists, and board-certified dermatologists to build a collagen that didn't taste like medicine. The Korean café drinks she grew up on — banana milk, strawberry milk, matcha — became the inspiration for every flavor.

She wrote a book about everything she learned. The Collagen Glow, published by W. W. Norton, is in bookstores now. And the cup she built for herself? 100,000 women now drink it in their kitchens before anyone else is awake.

7
Years in Korean labs
100k+
In the Crush Club
W.W. Norton
Published author
By Collection

Or shop by mood.

Creamy Korean milks. Sugar-free café flavors. Savory broths. And the rest of the ritual — capsules, electrolytes, jelly.

🫙Collagen
See all collagen →
⭐ Best Seller
Korean Milk Collection
Banana Milk, Strawberry Milk, Matcha, Vanilla — nostalgic flavors with clinically proven peptides.
From $40.50/mo
Shop Now
🍵 Sugar-Free
Sugar-Free Collection
Matcha, coffee, hojicha, lucuma, turmeric — zero sugar, full collagen.
From $40.50/mo
Shop Now
🍜 Savory
Savory Broths
Rich, mineral-dense Korean broth collagen — sip it or cook with it.
From $42.00/mo
Shop Now
Looking for more? We have more.
We aren't just a collagen brand.
🔒
💊
Vegetarian Capsules
Just as vetted formula. Highly effective.
Keratin Hair Boosters Calm & Sleep BoostersVegetarian
Discover →
🔒
⚡
Beauty Electrolytes
Delicious flavors. Hydration that shows on your skin.
Sugar-FreeVegan
Discover →
🔒
🌾
Sugar-Free
Glycine fortified milk blend for clearer skin, better sleep, and pro-collagen amino aicd absorption.
Allulose-BasedBanana MilkVanilla Bean
Discover →
🔒
🎁
Jelly
Collagen jelly in delicious flavors. Coming soon.
Save 25%Pre-Order
Notify Me →
2 minutes · 4 questions

Tell us your coffee order.
We'll pick your three.

Four questions: how you take your morning, what your wind-down looks like, what you crave most. We'll match you to the three flavors most likely to become your forever cups.

Match Me →
🎯 Find Your Three
Build Your Ritual

Three-flavor bundles
for your morning.

Some mornings call for matcha. Some call for strawberry milk. Some call for both. The bundles are built around the way real days actually move — pick the one that sounds like your week.

★ Most loved · Save $33
The Glow Stack
For the girl who wants the full result without thinking. One creamy morning cup, one sugar-free afternoon, one warm evening sip — covers skin, hydration, and the 9pm wind-down.
3 flavors · 90 servings · 30 days
  • Banana Milk — your 7am creamer for your coffee
  • Matcha (sugar-free) — your 2pm reset
  • Korean Broth — your 9pm wind-down
  • + engraved Crushed Tonic scoop
$99 $132 −25%
Get the Stack →
For: Morning People
The Café Run
If your morning is coffee, oat milk, and a slow scroll — this is the stack that turns it into a glow ritual without changing your routine.
3 flavors · save 20%
  • Vanilla Bean — stirs into espresso
  • Coffee — your iced americano
  • Hojicha Vanilla Latte— your slow Sunday cup
$72 $90 −20%
Add to Cart
For: First-Timers
The Tasting Flight
Five mini sachets of the cult ones. Try them all in a week, find your forever cup, then come back for the full size with conviction.
5 mini servings · zero risk
  • Banana · Strawberry · Vanilla
  • Matcha · Rose Latte
  • + $10 credit toward your first full bag
$18 $25 Risk-free
Try Five →
For: The Algorithm
The FYP Set
If you saw this on TikTok and you're already half-convinced — these are the three flavors that put us there. Pink, photogenic, dangerous.
3 flavors · save 20%
  • Banana Milk · Strawberry Milk
  • Cream Soda Collagen
  • + Sally's 4 viral recipe cards
$72 $90 −20%
Add to Cart
For: Wind-Down
The After-7 Cup
Low-caffeine, warm, comforting. For the part of the night when you want a ritual but you don't want a buzz — and you don't want to think about your routine.
3 flavors · save 20%
  • Hojicha — roasted, calming
  • Honeydew — light and clean
  • Sweet Yogurt — tangy and grounding
$72 $90 −20%
Add to Cart
⭐ Best Seller 🥛 Bovine 🐟 Marine 🌱 Vegetarian

★★★★★4.9 · 12 reviews · 1 in 2 reorder

25% off first month, then 15% off · Free shipping · Skip, swap, or pause anytime

✓
+153% skin elasticity in 8 weeks (clinical)
✓
+128% hydration · skin that holds water better
✓
4,000 Dalton peptides · half the size of Vital Proteins
🚚 Free shipping $60+
↩️ 30-day guarantee
🌿 Sustainably sourced
🔒 Lab certified
5g
clinically effective dose
per stick
Glow From Within
5g Hydrolyzed Marine Collagen per Serving Low Molecular Weight for Better Absorption Pure Collagen with 0 Fillers 18 Amino Acids Delicious, Creamy & Low Sugar
Clinically Proven Non-GMO Fully Traceable Halal & Kosher 3rd-Party Tested Zero Metals
Marine vs. Bovine?+
Marine (from fish) is our premium, beauty-forward option — naturally composed mostly of Type I collagen with an even smaller peptide size (~4,000 Daltons) for faster absorption. Fully traceable down to the exact fish. Bovine contains both Type I and Type III, making it broader-spectrum for skin, hair, nails, and joints. Both are certified Halal & Kosher. Our bovine is completely free of growth hormones, antibiotics, BSE & TSE, ethylene oxide, additives, irradiation, nitrosamines, and melamine.
Why This Collagen Actually Works+
Our collagen is hydrolyzed to 4,000–5,000 Daltons — half the size of Vital Proteins. Small enough to be absorbed directly through the gut lining into the bloodstream. Standard collagen powders are often much larger and need further digestion before absorption can begin, reducing effectiveness significantly.
Clean Ingredients+
Halal and Kosher certified. Zero artificial coloring. Zero artificial flavoring. Lab-tested for heavy metals, dissolvability, and absorption. Sustainably sourced and engineered for maximum bioavailability. Certificate of Analysis available for every batch. See full ingredient list →
Full Amino Acid Profile+
Hydroxyproline (structural stability), Methionine (antioxidant protection), Arginine (collagen synthesis), Lysine (cross-linking strength), Histidine (barrier repair), plus Proline, Leucine & Glycine — the backbone trio that forms ~57% of collagen by weight.
▶
Sally's Viral Recipe
Sally's Viral Recipe

Drink daily for your
best skin and hair!

1
Mix 1 TBSP of banana milk collagen into 2 TBSP of water until dissolved.
2
Add 1 cup of your favorite milk — oat, almond, whole, or coconut all work perfectly.
3
If you have an electric whisk, mix directly into 1 cup of milk. For stronger flavor, add 2 TBSP.
4
Add ice and a shot of espresso for a collagen iced latte — the perfect morning ritual.
2,400+ glow stories
4.9
★★★★★
Based on 2,400+ verified reviews
Shop Now
★★★★★
"My favorite!! I'm on my 5th batch. I love blending it into my smoothies every morning. The banana milk flavor is genuinely addictive."
JF
Julia Fox
5 months · Banana Milk
✓ Verified
★★★★★
"I've gotten this a few times now and have yet to be disappointed. It's delicious, doesn't have a texture, no weird aftertaste — and my skin is genuinely glowing."
SK
Sarah K.
3 months · Strawberry Milk
✓ Verified
★★★★★
"As a dermatologist I recommend this to all my patients who ask about ingestible collagen. The formulation quality is excellent and the taste compliance is unmatched."
DR
Dr. Mia R.
Licensed Dermatologist
✓ Verified
Crush Club · 100,000+ strong

You're not a customer.
You're Crush Club.

A community of women who treat the morning cup as a small act of self-respect. The same drink Sally still has at 7am, in 100,000 other kitchens. Recipes, café partnerships, dinners, and the occasional very specific opinion about matcha.

📖
Recipes You Won't Find Anywhere Else

Monthly drink builds from Sally and our Korean café partners. The banana matcha that started it all. The strawberry oat latte we never published. The hojicha ritual we drink every afternoon.

🍵
Café of the Week

Every Monday we feature a Korean or Korean-American café we love — and invent a custom Crushed Tonic drink inspired by them. Recreate it at home or visit in person. New city, every week.

🌙
The Dinner Club

A few times a year, in New York, LA, and Seoul, we host small dinners for Crush Club members. Twenty seats. Korean food. A welcome cocktail with whichever flavor you choose. Sally hosts.

Join the Crush Club → Join Dinner Waitlist

Subscribers are auto-enrolled · No fee · Unsubscribe anytime

On 14 million screens

The morning ritual,
in 14 million takes.

Crush Club, in their own kitchens — the strawberry milk pour, the matcha foam, the slow stir at 7am. Real customers, real ceramic mugs, real glow journeys. What started in one kitchen now happens in 100,000.

#collagencup#kbeautyritual#7amritual#bananamilkcollagen
@sallyk.glow ▶ 3.2M
▶
"day 47 of the banana milk and I refuse to go back"
@itsjess.daily ▶ 1.8M
▶
"the strawberry milk pour is my whole personality now"
@mira.matcha ▶ 4.1M
▶
"30-day glow check. i wasn't expecting it to actually work."
@thecollagencup ▶ 2.6M
▶
"hojicha at sunset. unserious. effective."
Start Your Tub #1 →
The Collagen Glow
Published by W. W. Norton

Everything Sally learned,
in one book.

Seven years of research with Korean labs and dermatologists, distilled into a practical guide to ingestible collagen — what works, what doesn't, and how to build a ritual you'll actually keep.

The Science, Simplified
Dalton sizes, bioavailability, and why most collagen fails — explained without the jargon.
30 Korean Café Recipes
The banana milk, the matcha foam, the strawberry latte — all the drinks that started it all.
Dermatologist-Backed
Reviewed by board-certified dermatologists, with clinical references throughout.
Get the Book → Read an Excerpt
Questions

Everything you might ask.

How quickly will I see results?+
Most customers notice improved hydration within 2–4 weeks, with visible changes to fine lines and elasticity by week 8. Hair and nail benefits typically appear around weeks 6–10. Consistency is key — one drink daily.
Does it really taste good?+
Yes — that's the whole point. Each flavor is built around a nostalgic Korean café drink, with zero fishy aftertaste and 0 to 3g of sugar. 1 in 2 customers repurchase, the highest rate in the category.
How do I use it?+
Mix one tablespoon into 2 tablespoons of water until dissolved, then add a cup of your favorite milk over ice. Or blend directly into smoothies, coffee, or matcha. It dissolves clean with no grit.
Marine or bovine — which should I choose?+
Marine is our premium, beauty-forward option (mostly Type I collagen, ~4,000 Daltons). Bovine is broader-spectrum (Type I & III) for skin, hair, nails, and joints. Both are Halal and Kosher certified.
Is it third-party tested?+
Every batch is third-party tested for heavy metals, purity, dissolvability, and absorption. A Certificate of Analysis is available for each batch, and our collagen is traceable down to the exact fish.
How does the subscription work?+
Subscribe and save 25% on your first month, then 15% off ongoing. Shipping is free, and you can skip, swap flavors, or pause anytime from your account. No commitment.
What's your guarantee?+
We offer a 30-day money-back guarantee. If you don't love your first bag, reach out and we'll make it right — no questions asked.
Is it safe during pregnancy?+
Our collagen is clean and free of fillers, but as with any supplement, we recommend consulting your doctor before use if you are pregnant or nursing.
Your 7am, upgraded

The cup you'll
actually keep drinking.

Tastes like dessert, works like skincare, and earns its place on your counter — not in your cabinet. Find your flavor and start the ritual today.

Find Your Flavor → Shop Best Seller
↩️30-day guarantee
🚚Free shipping $60+
🔄Skip or pause anytime
🔬Clinically tested