What product is applied to protect the scalp and hairline from caustic chemicals during a chemical treatment?

The protective base cream is specifically designed to create a barrier that shields the scalp and hairline from the harsh effects of caustic chemicals found in various chemical treatments, such as relaxers and perms. This product helps to prevent irritation and burns resulting from exposure to these chemicals, which can be damaging to sensitive skin. By applying the protective base cream along the hairline and on the scalp, the stylist ensures that the chemicals do not directly contact these vulnerable areas, enhancing client safety during the treatment process.

In contrast, moisturizing serum, leave-in conditioner, and oil treatments do not serve this particular protective function. These products are designed to hydrate, condition, or nourish the hair rather than to safeguard the scalp from chemical exposure, making them unsuitable for this purpose in a chemical service setting.