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"I truly love these products. I have noticed a difference in my face from improved texture to less fine lines. I love that the products come in glass containers and reuse pumps."
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A prescription-strength Retinol and Hyaluronic Acid serum formulated for sensitive skin that reduces fine lines and wrinkles without irritation.
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Suitable for
All skin types, including dry, mature, blemish-prone, combination, and sensitive skin.
Why we stand behind it
Normally, Retinol degrades and oxidizes when coming into contact with light, air, or water but this clinical-grade serum is activated fresh for peak potency.
Powderized Retinol is precisely dosed with a patented, precision dispenser and seamlessly activated in your palm with a hyper-moisturizing Hyaluronic Acid. The result? A serum that delivers visible results in 1-2 weeks without irritation.
In clinical testing on this 0.25% pure Retinol (equivalent to a starting prescription Retinoid), subjects screened for sensitive skin had no irritation using the serum every evening with excellent results:
- 97% of subjects had a decrease in fine lines and wrinkles in 1 week.
- 96% of subjects had an increase in firmness in 4 weeks.
- 76% of subjects had an increase in textural smoothness and elasticity in 4 weeks.
*Based on a clinical testing study with measured instrumentation of 29 subjects evaluated with a Visia Image Analysis Pro over 4 weeks.
Key ingredients
Retinol: a type of Vitamin A that stimulates cell turnover so you shed dead cells and build collagen faster to reduce fine lines and wrinkles and bust blemishes.
Hyaluronic Acid: this multi-weight formula penetrates multiple layers of skin to deeply hydrate, boost elasticity, plump and restore the skin from within, helping to smooth fine lines and wrinkles.
this product meets
The Credo Clean Standard™
Every product we offer meets our industry leading standards for safety and sustainability.
learn moreThis product is
Cruelty Free
Sustainable Packaging
Vegan
Gluten Free
Fragrance Free
Alcohol Free
Soy Free
Paraben Free
An undertone is the color beneath the surface of your skin, which never changes (even with a tan). There are three types of undertones:
Pink/Cool
I see red or pink undertones around the perimeter of my face and neck.
My skin burns easily, but barely tans.
My skin looks better in silver jewelry than gold.
Neutral
I see both pink and yellow undertones around the perimeter of my face and neck.
My skin sometimes burns and sometimes tans.
My skin looks good in both gold and silver jewelry.
Yellow/Warm
I see yellow or golden undertones around the perimeter of my face and neck.
My skin rarely burns, but tans easily.
My skin looks better in gold jewelry than silver.
Find your shade match
Take our 1 minute quiz and get matched to real people with your skin tone and type.
What's Included: Time Rewind Retinol Active Powder Precision Dispenser and a Quadruple Hyaluronic Acid Serum Pump.
How to Use: After cleansing, apply serum.
1. Stamp Retinol Active Powder in palm for one precise dose (this keeps anti-aging ingredients at peak potency).
2. Pump one dose of Hyaluronic Acid; mix in palm (this activates powders into hydrating, silky serums).
3. Apply serum to face and neck.
Use every evening.
Pro-tip
Can be layered under a moisturizer.
Not recommended for pregnant or nursing mothers.
We co-founded the nonprofit Pact to demystify how to recycle your beauty packaging empties and divert waste from landfills.
How to recycle your empties
1. Disassemble and clean all components
2. Pick the right disposal bin
3. Drop off your empties at your nearest Pact bin
1 Product Recycled = 10 Credo Rewards Points
create accountFounded by Liz Whitman, a beauty industry veteran of over 20 years, Exponent Beauty innovates on delivery systems to ensure high performing clinical skincare ingredients are at their highest concentration and efficacy. Born from the ageless esthetician practice of mixing fragile antioxidants fresh to preserve peak potency, Exponent’s anti-aging Activated Serum line fully protects antioxidants for clinical serums with visible results in 1-2 weeks. All of their products are dermatologist-recommended and clinically tested with measured instrumentation on sensitive skin for visible results without irritation. Exponent’s patented packaging is refillable to eliminate plastic waste earning the brand B-Corp certification and an award for sustainable packaging design. Exponent prides itself on giving consumers powerful, science-backed skincare solutions coupled with the magic of uniquely designed packaging experiences.
SHOP ALL Exponent BeautyOverall rating: 4.6855345 / 5 from 159 reviews.
The Time Rewind Retinol Power Serum is praised for its quick absorption, smooth texture, and effective results in reducing fine lines and wrinkles. Customers appreciate its gentle formulation for sensitive skin and the luxurious feel it provides.
Review topics: ["results","wrinkles","improvement","difference","feels","packaging","formula","retinol","skin","looks","powder","serum","worry","solution","vitamin c","system"].
"I truly love these products. I have noticed a difference in my face from improved texture to less fine lines. I love that the products come in glass containers and reuse pumps."
— ANDREA P. (5/5)
"After two weeks my skin is glowing like new. This retinol is unlike any other I've used (and I've tried a bunch). It feels gentle but packs a real punch and my skin is tighter, my pores smaller, and my tone is more uniform and glowing. I can"
— Chloe Y. (5/5)
"It is helping with overall texture and small wrinkles. Nanette Burrows"
— Mary B. (5/5)
"Love all things Exponent!! This is an incredible retinol. Powerful."
— Alex D. (5/5)
"I love this product. I was initially dealing with perioral dermatitis from some product in my line-up, and so my derm recommended I stop using the retinol product I had been for years while it went away. This old product is the well-known brand that gives you a custom nightly formula; it's great, but maybe it was the culprit. Around the same time, I walked into a Credo store and happened to meet the founder of Exponent, Liz, who was there to talk about her products and the innovation of mixing the powder with the serum with customers. She was so warm and helpful, and she gave me the tip that it might actually be my chemical sunscreen at fault because retinol should actually help. I bought the Exponent retinol there that day, listened to Liz's advice to switch to mineral sunscreen, and once the perioral dermatitis (little whitehead looking bumps and dryness that wasn't painful like acne) resolved around my mouth and chin, I added in the Exponent retinol serum as she recommended. It all worked like a charm, and my skin has never looked better. Now, I also use the Exponent vitamin C in the day, after switching from a very popular rose oil vitamin C. Very, very happy and thankful for the results. So lucky!"
— Mariel (5/5)
"The concept of mixing the ingredients really appeals to me, and the thoughtful environmental packaging aligns with my values! I see positive changes on my skin and whether that is the placebo effect or wishful thinking or actual results, I'll take it."
— Ari-Asha C. (5/5)
"I love the powder/serum combo. I sometimes just use the serum on it's own when I want extra hyaluronic acid. I found that storing the powder upside down helps me get even product doses every time."
— Erin D. (5/5)
"This stuff is amazing!"
— Elisa T. (5/5)
"With continued use seeing continuous improvements. Gentle on my skin yet remarkably effective. Worth every penny. So glad to discover Exponent Beauty."
— Mary C. (5/5)
"Simply a level above any other product. I hand carry it to London-that's how much I care about using this over competitors."
— Charles M. (5/5)
We offer clean beauty vetted to the highest standard.
We want to know where ingredients come from and how they were made.
Clean beauty should include the just treatment of humans and animals.
We co-founded Pact to tackle beauty’s packaging waste problem.
A prescription-strength Retinol and Hyaluronic Acid serum formulated for sensitive skin that reduces fine lines and wrinkles without irritation.
Exponent Beauty Alcohol Free cruelty free dull skin Essentials Oils Fragrance Free Fragrance_Free Gluten Free Hyaluronic Acid Paraben Free Retinol sensitive skin serums Shop By Concern_Acne & Blemishes Shop By Concern_Anti-Aging Shop By Concern_Dark Circles Shop By Concern_Dry Skin Shop By Concern_Dull Skin Shop By Concern_Pores Shop by Concern_Sensitive Skin Shop By Ingredient_Alcohol Free Shop By Ingredient_Fragrance Free Shop By Ingredient_Gluten Free Shop By Ingredient_Hyaluronic Acid Shop By Ingredient_Retinol Shop By Ingredient_Soy Free Shop By Ingredient_Vegan Shop By Ingredient_Vitamin E Shop by Packaging_Refillable Shop by Routine_Night Shop By Skin Type_All Shop By Skin Type_Combination Shop By Skin Type_Dry Shop By Skin Type_Mature Shop By Skin Type_Normal Shop By Skin Type_Oily Shop By Skin Type_Sensitive skin care soy free Sustainable Packaging treatments Vegan Vitamin E add-to-cart //credobeauty.com/cdn/shop/files/Exponent_TimeRewindRetinol_02_Award.jpg?v=1762216417 //credobeauty.com/cdn/shop/files/Exponent_TimeRewindRetinol_03_Swatches.jpg?v=1762216404 //credobeauty.com/cdn/shop/files/Exponent_TimeRewindRetinol_04_BA-Clinicals.jpg?v=1762216367 //credobeauty.com/cdn/shop/files/Exponent_TimeRewindRetinol_06_BA.jpg?v=1762216267 //credobeauty.com/cdn/shop/files/Exponent_TimeRewindRetinol_07_Benefits-Edu.jpg?v=1762216316 //credobeauty.com/cdn/shop/files/Exponent_TimeRewindRetinol_08_InUse.jpg?v=1762216308 //credobeauty.com/cdn/shop/files/Exponent_TimeRewindRetinol_09_Testimonial.jpg?v=1762216258 //credobeauty.com/cdn/shop/files/Exponent_TimeRewindRetinol_10_HowTo.jpg?v=1762216425 //credobeauty.com/cdn/shop/files/Exponent_TimeRewindRetinol_11_Ingredients.jpg?v=1762216239 41440130760817 22ml 128.00 //credobeauty.com/cdn/shop/files/Exponent_TimeRewindRetinol_01_4bfb4ded-8fe5-4b15-a6b4-2b58c4aa668f.png?v=1762269614 https://credobeauty.com/products/time-rewind-retinol-power-serum-1?variant=41440130760817 InStock 22ml