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★★★★★ 4.8 rated by 2,400+ happy customers

Retinol that won't betray your skin

Mixed fresh at the moment of use. No oxidation. No irritation. Clinical-grade potency — every single dose.

✓ 30-Day Try Before You Buy — pay only if you love it. Free returns, no questions asked.

Try Risk-Free — Pay Later or buy now for $68 — free shipping over $75
Time Rewind Retinol Pro System — powder + hydrator two-piece system
B Corp
✓ Try Before You Buy
Featured In Refinery29 BeautyMatter Beauty Independent
The Problem With Pre-Bottled Retinol

Why your retinol stopped working (and it wasn't your skin)

Pre-bottled retinol begins oxidising the moment it's manufactured. By the time it sits on a warehouse shelf, ships to a store, and sits in your cabinet — you're applying a degraded formula that's lost up to 50% of its concentration.

A weaker, oxidised retinol still irritates your skin. It just doesn't deliver results. That's why your skin reacted — but nothing changed.

If you've tried retinol twice and quit, your skin isn't the problem. The formula was.

"Pre-mixed retinol loses up to half its concentration in just 6 weeks — before you've even opened the bottle."
Comparison: degraded pre-bottled retinol vs fresh-activated Exponent retinol
Real Results

People who'd given up on retinol — until this

Results from verified customers after 8 weeks. No filters. No adjustments.

Before and after — customer 1, 8 weeks
★★★★★
Sarah M., 47 — Retinol Dropout

"I'd tried retinol three times and every single time my skin purged and peeled. I gave up. A friend sent me this. I'm now 10 weeks in with zero irritation and my skin looks better than it did at 35."

Before and after — customer 2, 6 weeks
★★★★★
Jennifer K., 41 — Sensitive Skin

"My derm told me my skin was too reactive for retinol. I've been using this for 6 weeks. My fine lines are noticeably softer and my skin hasn't had a single red day. I wish I'd found this years ago."

"I genuinely thought I was one of those people whose skin just couldn't handle retinol. Turns out I was using the wrong kind."
— Rachel D., verified customer · 52 · New York
From The Founder

Why I built retinol you mix yourself

Working in the spa industry, I watched estheticians mix treatments fresh every single time — because they knew pre-mixed formulas lose potency fast. So I asked myself: why can't people do this at home?

It took 50 iterations to make the two-pump ritual silky smooth. But now you get exactly what estheticians give their clients — peak-potency retinol, activated the moment you use it.

Try It Risk-Free
Liz Whitman founder video — why I built Exponent Beauty
How It Works

Activated at the exact moment you use it

Two components. Stored separately. Mixed fresh in two pumps. No oxidation. Full concentration every time.

Sealed retinol powder — step 1 01

Retinol Powder — Sealed

0.25% pure retinol powder stored separate from the hydrator. No exposure to air or moisture. No degradation on the shelf.

Two-pump activation — step 2 02

Two-Pump Activation

One pump powder + one pump Quadruple HA hydrator. Combine in your palm. 50 iterations to perfect the silky texture. Takes 3 seconds.

Fresh equals full potency — step 3 03

Fresh = Full Potency

Activated retinol is at peak concentration the moment it touches your skin. No oxidation. No wasted formula. Results visible in 1–2 weeks.

The Esthetician Standard
50×

iterations to get the texture right

The same standard estheticians use in every spa treatment — now in your bathroom

Professional estheticians always mix treatments fresh before applying them to clients. They know that potency degrades fast once a formula is opened. We built the same principle into a product you can use in 3 seconds, without a mortar and pestle.

2,400+ Verified Reviews

What customers say

★★★★★

"The science makes sense. Week 2 and my skin is smoother with zero redness. The mechanism is real."

Michelle T. — Age 44
★★★★★

"I'd tried retinol three times. Every time my skin purged. I'm 10 weeks in with zero irritation and my skin looks better than it did at 35."

Sarah M. — Age 47
★★★★★

"I was sceptical about 0.25% — I thought I needed at least 1%. My skin looks genuinely better at 6 weeks than it ever did on bottled retinols."

Dana W. — Age 38
★★★★★

"I genuinely thought my skin just couldn't handle retinol. Turns out I was using the wrong kind."

Rachel D. — Age 52
★★★★★

"My derm said the fresh-mix system made complete sense. My fine lines are visibly reduced. I'm on my third refill."

Priya N. — Age 50
★★★★★

"My derm told me my skin was too reactive for retinol. 6 weeks in, not a single red day. I wish I'd found this years ago."

Jennifer K. — Age 41
★★★★★

"The science makes sense. Week 2 and my skin is smoother with zero redness. The mechanism is real."

Michelle T. — Age 44
★★★★★

"I'd tried retinol three times. Every time my skin purged. I'm 10 weeks in with zero irritation and my skin looks better than it did at 35."

Sarah M. — Age 47
★★★★★

"I was sceptical about 0.25% — I thought I needed at least 1%. My skin looks genuinely better at 6 weeks than it ever did on bottled retinols."

Dana W. — Age 38
★★★★★

"I genuinely thought my skin just couldn't handle retinol. Turns out I was using the wrong kind."

Rachel D. — Age 52
★★★★★

"My derm said the fresh-mix system made complete sense. My fine lines are visibly reduced. I'm on my third refill."

Priya N. — Age 50
★★★★★

"My derm told me my skin was too reactive for retinol. 6 weeks in, not a single red day. I wish I'd found this years ago."

Jennifer K. — Age 41
★★★★★

"The two-pump ritual is so easy. I was worried it would be complicated. It takes literally 3 seconds."

Amy L. — Age 36
★★★★★

"I've spent thousands on skincare. This $68 product has done more for my skin texture than anything I've tried."

Caroline B. — Age 49
★★★★★

"Worth every penny. The difference between this and drugstore retinol is not subtle. It's night and day."

Tanya R. — Age 43
★★★★★

"First retinol I've tried where my skin didn't freak out in week one. I'm officially converted."

Melissa K. — Age 33
★★★★★

"My skin looks like it did five years ago. I've recommended this to every single woman I know."

Susan H. — Age 55
★★★★★

"I was about to pay $108 for SkinCeuticals. So glad I found this first. Same results, $40 less, try before you buy."

Nina P. — Age 45
★★★★★

"The two-pump ritual is so easy. I was worried it would be complicated. It takes literally 3 seconds."

Amy L. — Age 36
★★★★★

"I've spent thousands on skincare. This $68 product has done more for my skin texture than anything I've tried."

Caroline B. — Age 49
★★★★★

"Worth every penny. The difference between this and drugstore retinol is not subtle. It's night and day."

Tanya R. — Age 43
★★★★★

"First retinol I've tried where my skin didn't freak out in week one. I'm officially converted."

Melissa K. — Age 33
★★★★★

"My skin looks like it did five years ago. I've recommended this to every single woman I know."

Susan H. — Age 55
★★★★★

"I was about to pay $108 for SkinCeuticals. So glad I found this first. Same results, $40 less, try before you buy."

Nina P. — Age 45
Why $68 Is The Obvious Choice

Clinical-grade retinol doesn't have to cost clinic prices

See how Exponent compares to the alternatives your derm might recommend.

Feature Exponent Beauty — $68 SkinCeuticals — $108 Drunk Elephant — $90 Paula's Choice — $62
Fresh-activated formula Mixed at use Pre-bottled Pre-bottled Pre-bottled
Price $68 $108 $90 $62
Try Before You Buy 30-day TBYB
Independent clinical study 8-week study
B Corp Certified
Exponent Beauty
$68
  • Fresh-activated — full potency every dose
  • Try Before You Buy — $0 today
  • 8-week clinical study
  • B Corp Certified
  • Nordstrom + Credo Beauty
Try Risk-Free
Others ($90–$108)
$90–
$108
  • Pre-bottled — oxidises before use
  • No Try Before You Buy
  • Some clinical studies
  • Not B Corp
  • No risk reversal
What's In The Box
  • Time Rewind Retinol Pro System (powder + HA hydrator)
  • 30-Day Try Before You Buy — pay only if you love it
  • Fresh-Mix How-To Guide
  • Free shipping over $75
  • Free returns, no questions asked
  • B Corp certified formulation
Try Risk-Free for 30 Days

✓ Pay $0 today. Charged only if you keep it.

Time Rewind Pro System — what's in the box
Still Have Questions?

The answers that close the deal

The questions we hear most from people right before they order — answered honestly.

Will this cause a retinol purge or skin reaction?

Purging and irritation from retinol is almost always caused by over-exposure to an oxidised, unstable formula hitting your skin all at once. Because our retinol activates fresh at point of use, it's more stable and gentler on the skin barrier. Our 8-week clinical study confirmed this — participants with sensitive skin showed results with no significant irritation events. If you've had bad reactions to other retinols, this is specifically what this product was designed to solve.

Is 0.25% strong enough to actually do anything?

Fresh-activated 0.25% retinol outperforms pre-bottled 0.5%–1% retinol that has degraded. Concentration at the point of application matters more than the concentration on the label. Because our retinol hasn't been sitting in a bottle losing potency, you're getting 0.25% at full strength — which is more effective than a higher percentage that's been reduced to a fraction of its original concentration through oxidation.

Why is it a powder? Is the mixing complicated?

The powder format is what enables the fresh-mix mechanism — it's the technical breakthrough that keeps the retinol stable until the moment of use. As for the mixing: it's two pumps into your palm. That's it. We went through 50 formulation iterations to make sure the texture is silky smooth and the activation is seamless. It takes about 3 seconds.

What if it doesn't work for me?

That's exactly why we offer Try Before You Buy. Pay $0 today. Use it for 30 days. If you don't love it, return it — no questions asked, no charge. We're confident enough in the results that we carry the financial risk, not you.

Try Before You Buy

Pay $0 today.
Try it for 30 days.

We're so confident in the results that we carry the financial risk — not you. Order now, pay only if you love it.

01

Order Today — $0 Due

Your order ships immediately. No charge to your card until day 30.

02

Use It for 30 Days

Try the full fresh-mix ritual. Most customers see results in 1–2 weeks.

03

Keep It or Return It

Love it? You're charged $68. Don't? Return it free. No questions asked.

Start Your 30-Day Trial — Free

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Clinically Proven · Independently Tested

Your skin deserves retinol that actually works

8 weeks to visible results. 30 days to decide if it's for you. No risk.

Start Your 30-Day Trial
Try Before You Buy — $0 today Free shipping over $75 Free returns B Corp Certified Sold at Nordstrom + Credo
Time Rewind Retinol Pro System — $68
✓ 30-Day Try Before You Buy — pay only if you love it
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