Detailed answer

Hair waviness is primarily determined by the natural shape and curl pattern of an individual's hair follicles, and is not influenced by allergies to skincare products. Allergies to skincare products typically manifest in the form of skin irritation, redness, itching, or rashes when the skin comes into contact with the allergen. These reactions are localized to the skin and do not affect the hair follicles or alter the natural shape or texture of the hair. Hair waviness is more likely to be influenced by genetic factors, hormone levels, or the use of heat styling tools. If you are experiencing changes in the texture or waviness of your hair, it is recommended to consult a haircare professional to determine the underlying cause and seek appropriate treatment or styling techniques.