TATCHA The Dewy Serum hyaluronic acid & collagen amino acid serum — Dewy Finish, Gentle AHA Exfoliation

TATCHA The Dewy Serum is a 3-in-1 hyaluronic acid and collagen amino acid serum that gently resurfaces, plumps, and seals in moisture for smoother, dewier skin.

Formulated with a blend of Hadasei-3™ lactic acid, multiple-weight hyaluronic acid, and squalane, this lightweight serum combines Japanese superfood extracts and modern hydration tech to refine texture and boost skin’s apparent fullness. The formula is crafted to be kind to skin: it promotes surface turnover without stripping and replenishes hydration layers that help skin look fresher and more luminous. Use it as part of your AM and/or PM routine after essence and before moisturizer to maximize results.

How does The Dewy Serum gently improve skin texture?

The serum uses a double-fermented complex of Uji green tea, Akita rice and Okinawa algae (Hadasei-3™) to generate mild lactic acid and gentle AHAs that encourage natural exfoliation. This helps lift away dull surface cells so skin appears smoother and lines look softened.

• Double fermentation increases naturally occurring lactic acid levels.
• Gentle AHAs support natural cell turnover without abrasive scrubs.
• Leaves skin prepped to receive subsequent hydrating and active treatments.

What hydration benefits does it deliver and how long do they last?

Multi-weight hyaluronic acid targets hydration at several layers, while squalane helps lock moisture in place to reduce immediate dryness and support a dewier finish. Results are cumulative: you’ll notice instant smoothing and continued plumping with regular use.

• Short-chain and long-chain hyaluronic acids for surface and deeper hydration.
• Squalane mimics skin lipids to prevent moisture loss and increase comfort.
• Daily application improves hydration appearance over weeks, not just hours.

Can this serum be used with other TATCHA steps or active ingredients?

The Dewy Serum is designed to sit comfortably within a layered routine: apply it after an essence (like The Essence) and before your moisturizer. It pairs well with many actives, but introduce combinations gradually and follow sunscreen use in daytime routines.

• Works seamlessly after watery essences and before creams or oils.
• Compatible with most antioxidants and gentle retinoids; patch-test with stronger actives.
• Always use SPF in the morning when using exfoliating acids in your regimen.

Who will see the most benefit from using this serum?

This product suits anyone seeking non-irritating surface renewal plus enhanced hydration: those with early signs of texture changes, occasional dullness, or anyone who wants a dewier finish without heavy oils. It’s formulated for everyday use and for layering into both morning and evening care rituals.

• People wanting smoother skin texture with gentle AHAs.
• Those needing multi-depth hydration and moisture retention.
• Users who prefer a lightweight serum that layers well under creams and makeup.

Who is this for: The Dewy Serum is ideal for anyone looking to combine mild resurfacing with strong hydration—especially those who value clean-formulation ingredients and prefer products that layer easily. It’s a good match for routine-focused users who apply an essence, a treatment serum, then moisturizer, and for people seeking a radiant, plumped look without heavy textures. Every purchase also contributes to TATCHA’s education and literacy initiatives worldwide.

Ingredients

SACCHAROMYCES/RICE FERMENT FILTRATE, GLYCERIN, PROPANEDIOL, AQUA/WATER/EAU, SQUALANE, GLYCERYL STEARATE, ISONONYL ISONONANOATE, BEHENYL ALCOHOL, DIMETHICONE, STEARYL ALCOHOL, CAMELLIA SINENSIS LEAF EXTRACT, CLADOSIPHON OKAMURANUS EXTRACT, SODIUM HYALURONATE, HYDROLYZED COLLAGEN, HYDROLYZED ELASTIN, BETAPHYCUS GELATINUM EXTRACT, CRAMBE ABYSSINICA SEED OIL, STEARYL GLYCYRRHETINATE, ASCORBYL TETRAISOPALMITATE, PHYTOSTERYL MACADAMIATE, TOCOPHERYL ACETATE, SODIUM DILAURAMIDOGLUTAMIDE LYSINE, SODIUM CHONDROITIN SULFATE, POLYGLYCERYL-10 EICOSANEDIOATE/TETRADECANEDIOATE, CELLULOSE GUM, HYDROXYETHYL ACRYLATE/SODIUM ACRYLOYLDIMETHYL TAURATE COPOLYMER, DISODIUM PHOSPHATE, POTASSIUM PHOSPHATE, ETHYLHEXYLGLYCERIN, SORBITAN ISOSTEARATE, POLYSORBATE 60, BUTYLENE GLYCOL, TOCOPHEROL, ALCOHOL, PARFUM/FRAGRANCE, PHENOXYETHANOL, CITRAL, LIMONENE, LINALOOL "