*Based on a bio-instrumentation study of 25 panelists.
The best serum
"I've been using Tatcha for almost a year. All the Dewy products. The serum makes my skin look so smooth and hydrated. I'm 81yrs and proud of my skin thanks to Tatcha."

Plumping & Smoothing Treatment
A skin plumping serum that instantly floods dehydrated skin with 6x hydration and improves elasticity over time.
Free shipping and returns on U.K. orders



*Based on a bio-instrumentation study of 25 panelists.

| 6x | Instant hydration* |
| 87% | Showed improvement in elasticity after 4 weeks†† |
Clinical Results
*Based on a bioinstrumentation study of 25 panelists.
**Based on a clinical study of 30 panelists.
††Based on a bioinstrumentation study of 45 panelists.
Overall rating: 4.762757 / 5 from 1509 reviews.
The Dewy Serum is praised for its quick absorption, leaving skin feeling soft and supple. Customers report significant improvements in skin hydration, elasticity, and overall appearance. The product's appealing scent, beautiful packaging, and silky texture also contribute to its positive reception.
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"I've been using Tatcha for almost a year. All the Dewy products. The serum makes my skin look so smooth and hydrated. I'm 81yrs and proud of my skin thanks to Tatcha."
"I recently purchased the dewy serum and it’s so moisturising, it feels soft as silk and my skin drinks it. I pair it with the dewy milk moisturiser and it’s a dream team"
"Lovely serum, I wear it under makeup and makes for a perfect finish."
"Its a perfect combination of products"
"I have acne prone sensitive skin and it works great for me. Lightweight, but very hydrating! Perfect as a makeup base too"
"This is a regular in my daily routine it protects my skin from the elements and I am never without it as I am outdoors a lot"
Frequently asked questions