As we've seen, skin changes moment by moment with seasons and environment. Yet conventional skincare products use "fixed formulations" — the same ingredients, same concentrations, same texture all year round. This structural mismatch limits skincare effectiveness.
The limitations of fixed formulations
Conventional skincare products are formulated assuming "average skin" in "average conditions." In reality, even the same person's TEWL can vary up to 2x and sebum production up to 3x across seasons. "Same product all year" is an irrational approach that ignores environmental variation.
Combining environmental and skin measurement data
Designing optimal skincare requires two types of data:
Environmental data: Temperature, humidity, UV index, pollen count, PM2.5 concentration
Skin data: TEWL, stratum corneum moisture, sebum levels, redness (a* value), pigmentation
Cross-referencing these two datasets enables scientifically determining "what this skin needs today."
The rationality of variable ampoule systems
A variable ampoule system maintains a common base while varying active ingredient types and concentrations based on environment and skin condition. For example:
- Winter low humidity: Increase ceramide + cholesterol concentration, add occlusive ingredients
- Summer high UV: Concentrate antioxidants (Vitamin C+E+Ferulic Acid) at high levels
- Spring pollen season: Prioritize anti-inflammatory (niacinamide) + barrier-strengthening ingredients
AI skin diagnosis for optimal care recommendations
The combination of environmental and skin data creates enormous pattern variations. Optimizing these through human judgment alone is impractical. AI-powered skin diagnosis integrates real-time environmental data with skin measurements to recommend optimal ingredient combinations, concentrations, and textures — enabling truly personalized skincare.
From "using the same fixed formula all year" to "adaptive formulations that respond to environment and skin" — this is the next paradigm in skincare.
References
Key peer-reviewed sources behind the scientific statements in this article.
- Wang X, Wang Y, Yuan C, et al. Seasonal variations of epidermal biophysical properties in Kunming, China: A self-controlled cohort study. Skin Res Technol. 2020;26(5):702-707. PubMed
- Lin FH, Lin JY, Gupta RD, Tournas JA, Burch JA, Selim MA, et al. Ferulic acid stabilizes a solution of vitamins C and E and doubles its photoprotection of skin. J Invest Dermatol. 2005;125(4):826-832. PubMed
- Tanno O, Ota Y, Kitamura N, Katsube T, Inoue S. Nicotinamide increases biosynthesis of ceramides as well as other stratum corneum lipids to improve the epidermal permeability barrier. Br J Dermatol. 2000;143(3):524-531. PubMed