# Expert debate on hair care and washing frequency > Live situation record from CLSTR: https://clstr.news/situations/expert-debate-on-hair-care-and-washing-frequency > Updated: 2026-09-05T01:41:18.000Z. Sources: 4. Developments: 2. Discussions among hair care experts have focused on the optimal frequency of hair washing and the potential side effects of various cleansing habits. Initial reports highlight a debate between different methodologies. One perspective, citing a study in ‘Skin Appendage Disorders’, suggests that washing five to six times per week can be optimal for satisfaction. In contrast, some experts warn that frequent washing may overstimulate sebaceous glands, increasing sebum production, and suggest that one to two washes per week may suffice for certain individuals. Subsequent expert advice has emphasized the importance of allowing the scalp’s microbiota to regenerate, with recommendations to wash every 48 hours to avoid a ‘rebound effect’ of oil production. Additional guidance includes using dry shampoo on damp hair to manage oil and avoiding mechanical or thermal damage, such as towel rubbing or excessive heat, which can cause permanent changes to hair texture through ‘hair memory’. ## Timeline ### 2026-09-05: Hair expert recommends washing frequency and care tips Hair expert Juan Leal recommends washing hair every 48 hours to protect the scalp microbiota and suggests using dry shampoo on damp hair to manage oil production and prevent damage. 2 sources. https://clstr.news/cluster/hair-expert-recommends-washing-frequency-and-care-tips ### 2026-08-23: Hair care experts debate optimal shampooing frequency Experts provide differing advice on hair washing frequency, with some suggesting daily washing with gentle products is fine, while others warn it may overstimulate sebum production. 2 sources. https://clstr.news/cluster/hair-care-experts-debate-optimal-shampooing-frequency --- Cite as: Expert debate on hair care and washing frequency. CLSTR, https://clstr.news/situations/expert-debate-on-hair-care-and-washing-frequency