Final answer:
The product protecting the scalp from irritation in a "no-base" relaxer is known as a scalp protectant, which creates a barrier between the relaxer and the scalp. Mineral oil is one example of a scalp protectant used in relaxer products.
Step-by-step explanation:
The product protecting the scalp from irritation in a "no-base" relaxer is known as a scalp protectant. Scalp protectants are formulated with ingredients that create a barrier between the relaxer and the scalp, minimizing the risk of irritation and chemical burns.
One example of a scalp protectant used in relaxer products is mineral oil. Mineral oil forms a protective layer on the scalp, reducing the direct contact between the relaxer and the skin.
In addition to using a scalp protectant, it is important to follow the instructions provided with the relaxer product and avoid over-processing the hair to prevent scalp irritation.