Sources
Sources and limitations
This page explains what the reference is based on, why it contains few specific numbers, and where the help that a general text on skin care can offer comes to an end.
This reference can't see your skin and doesn't know your history. That's why we speak in general terms and keep recommending that you show a doctor anything that raises doubts.
How we select sources
The reference is built on generally accepted recommendations for sun protection and everyday skin care. Information about ultraviolet comes from the WHO practical guide to the UV index, and for how to use products we refer you to the manufacturers' directions.
We give specific numbers only when they come from a reliable source and are clear without explanation. That's why in our texts you'll find the UV index thresholds, emergency numbers and almost no other figures.
We don't retell individual new publications, don't cite customer reviews, and don't use materials prepared to promote cosmetics, clinics or procedures.
Main sources
- WHO — Global Solar UV Index: A Practical Guide
- Manufacturers' directions for cosmetic products
- General dermatologist recommendations on skin care
Limitations of the reference
This reference covers care for healthy skin in everyday situations. It doesn't diagnose, doesn't name medicines, creams, brands or procedures, doesn't give doses or treatment plans, and doesn't suggest homemade skin mixtures.
We don't judge appearance and don't promise to change it. The goal of the reference is to help you look after your skin, notice changes in time, and come to the doctor with clear questions.
If you have a skin condition or allergy, are expecting a baby, or are caring for an infant's skin, check general advice with a doctor. In a severe allergic reaction, call 112 or 103 (or your local emergency number).
See also
- Research
Where knowledge about skin comes from, how to read the promises on a package, and why skin care myths persist.
- Methods
Sun protection, cleansing and moisturizing, calmly keeping an eye on your skin, and photos for comparison.
- Glossary
Skin words in plain language: from epidermis and melanin to patch test and placebo.
- Home
The “skin in good order” reference: sun, dryness, what's in skin care products, and calm answers on when to see a doctor.
Sources
- WHO — Global Solar UV Index: A Practical Guide
- Manufacturers' directions for cosmetic products
- General dermatologist recommendations on skin care
This page reflects generally accepted views on skin care as of the date it was prepared. If your skin behaves unusually or something worries you, make decisions together with a dermatologist, not based on the text of this reference.