TATCHA Dewy Serum hydrating facial serum — 1 oz | gentle lactic acid, hyaluronic acid & squalane for smoother, plumper skin

TATCHA The Dewy Serum is a three-in-one hydrating serum that gently resurfaces, floods skin with moisture, and seals in hydration for a smoother, plumper, dewier look.

This lightweight serum blends lactic acid derived from fermented Japanese superfoods with hyaluronic acid and squalane to tackle texture, dehydration, and dullness without over-drying. Formulated around TATCHA’s Hadasei-3-inspired complex, it leans on fermented green tea, rice, and algae to yield gentle AHAs while restoring the skin’s moisture barrier. Use it as a mid-step—after your essence and before your moisturizer—to boost results in both morning and evening routines.

How does this serum improve skin texture without irritation?

The Dewy Serum uses gentle lactic acid produced through controlled double fermentation of Uji green tea, Akita rice and Okinawa algae, creating a mild AHA action that encourages natural surface turnover. Because the formula also includes hyaluronic acid and squalane, the resurfacing effect is balanced by deep hydration and barrier support, reducing the risk of tightness or flaking.

• Fermented Japanese superfoods provide naturally occurring lactic acid.
• Mild AHA action smooths uneven texture and softens fine lines.
• Hyaluronic acid plumps and restores moisture to dehydrated areas.
• Squalane replenishes lipids for a comfortable, non-stripped feel.

When and how should I layer The Dewy Serum in my routine?

Apply the serum after your essence or toner and before your moisturizer to maximize penetration and sealing of hydration. It works in both AM and PM; in the morning, follow with sunscreen, and at night pair it with your regular treatments or a richer cream if needed.

• Use after cleansing and your essence/toner step.
• Apply a few drops to slightly damp skin for better absorption.
• Follow with moisturizer and SPF in the daytime.
• Safe for daily use to maintain smoothness and moisture balance.

What skin concerns benefit most from this formula?

The Dewy Serum targets dryness, rough texture, and loss of plumpness—common signs of dehydrated or maturing skin. Its combination of gentle acids and humectants helps reveal a softer surface while drawing and holding water in the skin for a visibly dewier finish.

• Ideal for dry, dehydrated, or texture-prone complexions.
• Helps soften the appearance of fine lines caused by dryness.
• Improves overall radiance and surface smoothness.
• Non-stripping formulation suitable for regular use.

What ingredients make The Dewy Serum effective and clean?

The formula centers on a triad of active functions: natural lactic acid from fermented Japanese superfoods for gentle exfoliation, multi-weight hyaluronic acid to attract moisture, and squalane to lock hydration into the skin. Additionally, the product prioritizes kinder-to-skin components and excludes harsh irritants commonly found in stronger acid treatments.

• Double-fermented Uji green tea, Akita rice, and Okinawa algae create natural AHAs.
• Hyaluronic acid delivers multi-depth hydration and plumping.
• Squalane restores lipid balance and barrier resilience.
• Formulated for gentleness while improving texture and dewiness.

Who is this for? The Dewy Serum suits anyone seeking gentler resurfacing paired with reliable hydration—especially those with dry, dehydrated, or uneven-textured skin wanting a dewier, plumper finish without aggressive exfoliation. It’s an approachable daily serum for layering in both AM and PM routines, and for shoppers who prefer skincare rooted in fermented botanicals and barrier-friendly hydrators. Every purchase also supports TATCHA’s education initiatives, adding a social-impact element to your skincare choice.

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 "