Protecting Hair Colour from Chlorine Damage

Chlorine acts as an oxidizing agent, effectively stripping hair of its natural oils and altering the molecular integrity of artificial pigment. When porous, colour-treated hair enters a pool, the fiber acts like a sponge, absorbing chlorinated water before it can be rinsed away. This leads to rapid fading, brassiness, and structural brittleness.

The objective of this routine is to fill the hair strand with non-reactive moisture to prevent chemical absorption. By managing the saturation state of the cuticle, you limit the amount of swimming pool water that penetrates the shaft.

1. Pre-saturate with clean water. Before entering the pool, drench your hair completely under a shower. The goal is to reach maximum saturation so the fiber has no capacity to absorb contaminated water. Use cool or lukewarm water to keep the cuticle smooth.
2. Apply a barrier oil. Distribute a light, non-penetrating oil through the lengths and ends of your hair. This creates a hydrophobic shield on the surface of the cuticle. Focus on the mid-lengths and ends where damage is most likely to show.
3. Secure the hair. Tie your hair into a loose bun or braid to minimize the surface area exposed to the water. Avoid using tight elastics that cause tension, as weakened colour-treated hair is prone to breakage. A silicone-free scrunchie is preferred.
4. Immediate post-swim rinse. Exit the pool and immediately rinse your hair with fresh, clean water. Do not wait for the hair to air dry or for the chlorine to crystallize on the shaft. This removes the chemical residue before it can react with your pigment.
5. Restore the moisture balance. Apply a mild, hydrating conditioner to close the cuticle and restore pH balance. Leave it on for several minutes before rinsing thoroughly. This ensures the hair recovers from the exposure and remains supple.

A saturated hair fiber is a protected hair fiber.