Potential Side Effects and Reactions of Nioxin Shampoo The cleanser also contains harsh detergents, sodium lauryl and sodium laureth sulfate, which may lead to irritation of the scalp and hair follicle potentially causing damage to the hair. Dry, brittle hair.

how long before I see results from nioxin? As mentioned briefly above, it can take up to three months for Nioxin to work—depending on the individual and the severity of hair loss, of course. All in all, Nioxin should be used daily for at least six weeks in order to begin to see results.

Also to know, can Nioxin regrow hair?

The Nioxin Hair Regrowth Treatment contains minoxidil, an FDA-approved medication that PandG said is the only ingredient clinically proven to effectively help regrow hair in men and women. It also can treat female pattern baldness. The Nioxin product line previously focused on making thinning hair appear fuller.

Which Nioxin shampoo should I use?

Nioxin System 1 is for normal hair that€™s fine and virgin (not chemically-treated). Nioxin System 2 is for noticeably thinning hair that€™s fine and virgin. Nioxin System 3 is for normal hair that€™s fine and chemically-treated. Nioxin System 4 is for noticeably thinning hair thats fine and chemically-treated.