Sauna and Hair: The Complete Guide to Protecting Your Hair in the Heat

Yes, the sauna can damage your hair. But the damage isn't inevitable — it's the result of specific things happening at specific conditions, most of which can be managed. If you're a regular sauna user and you've noticed drier ends, increased breakage, or fading colour, this guide is for you. What Heat Actually Does to Hair Hair is composed primarily of keratin — a protein structure — surrounded by a cuticle layer that acts as a protective barrier. When exposed to sustained high heat, two things happen that matter. First, the cuticle lifts. Hair cuticles are microscopic overlapping scales, and...