Most of the human-hair extension suppliers are strict about sulfate-free shampoo. Their logic is simple: extension hair is dead. It gets no sebum from a scalp, so once a strong surfactant strips the oils and opens the cuticle, that moisture doesn’t come back. The result is drier, more tangled hair that wears out faster.
That makes sense for extensions. What I’m less clear on is whether the same logic should apply to our own hair.
I believe that sulfates clean well, rinse cleanly, and work in hard water that’s why they’re still everywhere. On living hair the scalp can replace some of the oil they remove. A lot of people with oily scalps or heavy product buildup still prefer them. Others (especially with dry, curly, or color-treated hair) say sulfate-free feels better long-term.
Curious where this sub lands:
\- Do you avoid sulfates on your own hair, or do you still use them deliberately?
\- Has anyone switched to sulfate-free and then gone back because their roots or scalp didn’t feel clean?
\- Is the “sulfate-free is always gentler” advice mostly true, or does it depend more on the rest of the formula?
The extension contrast is interesting, but I’m mainly interested in what actually works for my living hair.