Scalp health is often overlooked in the broader context of hair care, yet it plays a critical role in maintaining both the appearance and integrity of your hair. In the UK, scalp issues such as dandruff, psoriasis, and seborrheic dermatitis are remarkably common, affecting a large portion of the population. Dandruff alone impacts up to 50% of adults, often leading to discomfort and embarrassment due to visible flaking and itching. Similarly, conditions like scalp psoriasis affect around 2-3% of the population, causing thick, scaly patches that can severely impact both scalp and hair health.

Blonde hair can turn green after swimming in a pool due to the presence of dissolved copper and other metals in the water. Contrary to popular belief, chlorine itself is not the direct cause. When copper is present in pool water—often introduced through pool pipes, algaecides, or the water source—it can undergo a chemical reaction, particularly when the water is chlorinated. Chlorine acts as an oxidizing agent, causing the copper to oxidize into copper oxide. This copper oxide is then attracted to the proteins in the hair shaft, especially keratin, which is the primary structural protein in hair. When these copper particles bind to the keratin in the hair, they impart a greenish tint, which is more noticeable in lighter hair colors like blonde.