What ingredient should be avoided in hair care products for chemically treated hair?

Sulfates should be avoided in hair care products for chemically treated hair because they are strong cleansing agents that can strip the hair of its natural oils and cause further damage. Chemically treated hair is already vulnerable due to processes like coloring, perming, or relaxing, which can weaken the hair structure and lead to dryness and brittleness. Sulfates, which are commonly found in many shampoos, create a lather that removes dirt and oil but can also remove essential moisture from the hair, making it more prone to breakage.

Other ingredients like silicones, essential oils, and protein can have beneficial effects on hair, especially when it comes to maintaining moisture, adding shine, and improving the overall health and appearance of chemically treated locks. Silicones can help to smooth the hair and reduce frizz, essential oils can nourish the hair and scalp, and proteins can help strengthen the hair, making them more suitable for individuals with treated hair.