Piboo
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CellNutt My Second Skin Collagen

Ingredients and claims, checked

Last checked September 12, 2026

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What is it like at a glance?

What the ingredients do

Hydration and softening lead, with 1 of 16 ingredients each.

Hydration
1
Softening
1

By skin type

  • DryGood fit
  • OilyNeutral
  • CombinationGood fit
  • SensitiveNeutral

Piboo’s rating from user reports.

Worth knowing

  • Contains fragrance

Made for

What is this product?

What to expect
It's made for better hydration.
Key ingredients
Hydrolyzed Collagen, Pva (Polyvinyl Alcohol), Centella Asiatica Extract
When
Morning and evening

A spot mask for the forehead, cheeks and under-eyes. It clings thinly to the skin.

Who is it for?

Less suited to

  • People avoiding fragrance
  • Sensitive skin

What to watch for?

Watch-outs

  • Contains fragrance

How do you use it?

Where in your routine
As-needed treatment step over completed skincare, applied and left to dissolve rather than peeled
Pairs well with
  • A hydrating toner or essence applied first, on still-damp skin
  • A moisturiser or mist afterwards, especially if residue remains
Don't combine with
  • A routine that avoids fragrance
  • Treating it as a wrinkle or firming treatment
  • Same-session physical exfoliation or freshly treated skin

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Tap a name to read about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary, except 4 with no dictionary entry, left in Korean.

Worth a closer look

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

What the claims add up to

You can expect:
better hydration
Don't count on:
firmer skin · better barrier support
See each claim, checked (30)

Claims, checked

  • My Second Skin sheet that melts on contact with waterbacked by evidence
  • The entire sheet is composed of water-soluble collagen and active ingredients that react to moisture.backed by evidence
  • Remove the protective mesh from the patch. Attach the glossy side of the nonwoven fabric to the facial skin. Gently press along the contours to ensure the transparent film adheres well. After the film adheres well, remove the nonwoven fabric that separates from the film.backed by evidence
  • Contains patches for forehead, cheeks, and under-eyesbacked by evidence
  • When it meets skin moisture, the fiber structure gradually unravels and dissolves naturally. The dissolution rate is controlled by the amount of moisture and it reacts gradually on the skin.backed by evidence
  • CellNutt My Second Skin is not a method of "absorbing essence" like a typical nonwoven mask, but a structure where the nanofiber sheet adheres and dissolves on the skin in reaction to moisture. It features thin collagen nanofibers that adhere to skin contours and are designed to uniformly deliver collagen and moisturizing ingredients to the skin surface.backed by evidence
  • What skin types is it suitable for? It is suitable for skin concerned with dryness, roughness, and tightness. It is especially well-structured for users who value moisture hydration and skin adhesion. However, for sensitive skin, it is safe to check the ingredient list first and do a patch test before use.backed by evidence
  • It delivers active ingredients and disappears depending on skin moisture level, or leaves a minimal amount as a protective film.plausible, not tested
  • In environments with insufficient moisture, it does not dissolve immediately but remains as a thin film, serving as a protective layer that envelops the skin.plausible, not tested
  • Do I really not need to remove it? Yes, you don't need to remove it separately. It dissolves naturally in reaction to moisture, and is designed to leave only minimal residue depending on skin type and condition.plausible, not tested
  • A nano sheet that melts using skin moisture and air moisture and permeates into the skin.partly backed
  • CellNutt's My Second Skin Collagen is a skin-adhering self-melting nano sheet that delivers optimal nutrients using skin moisture. Maintain moisture even in dry environments.partly backed
  • Self-melting sheet, collagen nano sheet, skin adhesion, moisture retention, skincare, mask sheet, nano technologypartly backed
  • #WithoutSerum #MeltsOnApplication #DirectlyDeliveredToSkinpartly backed
  • Because the My Second Skin sheet consists of nano-sized active ingredients that dissolve naturally upon contact with moisture.partly backed
  • The answer is My Second Skin. Skincare that's done once you apply it. #ReactsToSkinMoisture #SheetMeltsAndAbsorbs #DeliveredImmediatelyWithoutSeparateSerumpartly backed
  • #CompletelyTransparent #UltraThinFilm #SheetItselfIsActiveIngredient #UltraAdhesiveWithoutGapspartly backed
  • Not a sheet you remove, but a sheet that melts and acts. With a nano-scale fiber structure composed of water-soluble active ingredients, without unnecessary solid supports,partly backed
  • Key ingredient: French collagen. My Second Skin Collagen created by nano technology and hydrolyzed collagen from a manufacturer with over 130 years of tradition.partly backed
  • Skin changes in just 2 weeks. Skin density Before / After. Under-eye wrinkle improvement Before / After. Table 4. Skin moisture loss measurement results (unit: g/m2h) Before product use 27.273 ± 3.274, after 2 weeks of product use 22.567 ± 1.683, p-value 0.000, 1) by Paired samples t-test (p<0.05), Before product use vs after 2 weeks of product usepartly backed
  • Recommended for these people. Those concerned about sagging and weak-looking skin / Those with fine lines and skin texture concerns / Those frequently exposed to dry environments such as airplanes and prolonged outdoor activities / Those concerned about dry and rough skin texture / Those who found the runny essence type inconvenient / Those who want convenient skin care during daily lifepartly backed
  • A nano sheet that melts and is absorbed the moment you apply itoverstated
  • 2025 Hwahae Beauty Award 1st Place. 2025 Second Half Efficacy/Effect - Skincare Category - Moisturizing Partial Mask Pack 1st Placeno supporting source found
  • The efficacy of CellNutt My Second Skin proven by real user reviewsno supporting source found
  • Supports skin elasticity recovery / Strengthens moisture retention (continued hydration) / Supports skin barrier recovery / Helps reduce fine linesno supporting source found
  • Collagen nano film test used in My Second Skin (reference). Skin improvement rate after 2 weeks of product use. Skin density improvement 0.000% (before product use 9.2%). Skin moisture loss improvement 0.000% (before product use 27.273g/m2h). Under-eye wrinkle improvement 0.000% (before product use 0.04341mm).no supporting source found
  • Can I use it after dermatological treatments? Yes, you can use it. It contains low-irritation cica ingredients that can help soothe the skin. However, if your skin is sensitive immediately after a procedure, we recommend using it according to your skin condition.no supporting source found
  • Patent Pendingno supporting source found
  • Have you experienced these inconveniences? Conventional mask packs have essence that runs down. You have to take them off again after applying. You can't do anything while wearing the pack. You have to endure even if you're sleepy and finish. They keep falling off.nothing specific to check
  • What skin concerns do you have? My skin is dry so fine lines look more prominent. My skin elasticity has decreased and it looks droopier than before. My skin seems thinner, lacks strength, and dries easily. Even when I do skincare, it feels like it sits on the surface and doesn't absorb well. My skin feels dry inside but only shiny on the outside.nothing specific to check

We quote each claim exactly as the brand published it, then check it against the ingredient list and the brand's own documents.

How we check claims

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