Barrier-supporting formulas
LCY tracks new data, methods and transparency signals in this area.
LCY TOPIC DESK · 2026
Skin Care
Explore active ingredients, routines and global care trends through the lens of evidence and tolerance.
Reviewed by: Cosmetics Product & Evidence EditorUpdated: 26.08.2026
SOURCE CHECKEDResults can vary with concentration, formulation, consistent use and skin type.
A trend is not evidence.01
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Explore active ingredients, routines and global care trends through the lens of evidence and tolerance.
Personalised routines
LCY tracks new data, methods and transparency signals in this area.
Microbiome claims
LCY tracks new data, methods and transparency signals in this area.
02 · Source digest
What do the sources say?
Dermatology reviews and cosmetic formulation studies suggest potential benefits for some ingredients; findings remain product- and use-specific.
PubMed — Oral and topical peptides for skin aging (2026 systematic review)
This source supplies safety, methodology or clinical context. Results can vary with concentration, formulation, consistent use and skin type.
Dermatology reviews and cosmetic formulation studies suggest potential benefits for some ingredients; findings remain product- and use-specific.
LCY separates trend reporting from evidence assessment and reviews methods, samples, limitations and conflicts together.
Open sourceAmerican Academy of Dermatology — Retinoid or retinol?
This source supplies safety, methodology or clinical context. Results can vary with concentration, formulation, consistent use and skin type.
Dermatology reviews and cosmetic formulation studies suggest potential benefits for some ingredients; findings remain product- and use-specific.
LCY separates trend reporting from evidence assessment and reviews methods, samples, limitations and conflicts together.
Open sourceHow do we read sources?
LCY separates trend reporting from evidence assessment and reviews methods, samples, limitations and conflicts together.