The most common culprit. Creates a heavy, water-resistant film that traps residue and blocks hydration.

Designed to cling to damaged hair, but it builds up fast and is hard to wash out without sulfates.

Gives instant slip and shine but evaporates unevenly, leaving patchy buildup and dryness underneath.

Extremely sealing; used for “long-lasting hold” but can suffocate the scalp and dull natural shine over time.

A sticky silicone that pairs with dimethicone for extra coating power; makes hair feel soft but keeps real moisture out.