In humid weather, wash regularly with a mild shampoo, dry your roots fully instead of tying up damp hair, rinse sweat off after activity, and keep caps and helmet liners clean. An oily, itchy or flaky scalp that does not settle with a better routine is worth checking.
Why humidity matters
Heat and humidity increase sweat and oil on the scalp. Yeasts that naturally live on skin, such as Malassezia, are linked in research to dandruff and seborrhoeic dermatitis, and they thrive in oily conditions.
A simple routine
Wash daily or every other day with a mild shampoo, massage with fingertips, rinse thoroughly, and blow-dry the roots on a cool or medium setting. Do not sleep on damp hair.
When to get help
If flaking, redness or itching persists for weeks, see a doctor or pharmacist. At Folli-Doc Sibu we can also look at your scalp under magnification.
Questions
Is it bad to wash my hair every day?
For most people in humid weather, no.
Should I use oil on my scalp?
If your scalp is already oily, heavy oils can make it worse.
Studies mentioned
These studies looked at ingredients or general approaches. None of them tested our treatments or products, so they are background, not proof.
- Akbulut TO et al. (2022). Is the Frequency of Seborrheic Dermatitis Related to Climate Parameters?. Sisli Etfal Hastan Tip Bul 56(1):91-95.Retrospective clinic study (Istanbul). Seborrhoeic dermatitis visits were more frequent in colder, lower-humidity months and correlated inversely with temperature and maximum humidity.PubMed 35515978doi:10.14744/SEMB.2021.67503
- Hay RJ (2011). Malassezia, dandruff and seborrhoeic dermatitis: an overview. Br J Dermatol 165 Suppl 2:2-8.Review. Malassezia yeasts are associated with dandruff and seborrhoeic dermatitis; both respond to treatments that inhibit these yeasts.PubMed 21919896doi:10.1111/j.1365-2133.2011.10570.x