What's the difference between Nioxin Systems 1, 2, 3, 4, 5 and 6, and how do I know which one to use? Which system you should use depends on your hair condition. System 1 is for natural hair (uncoloured and untreated) with light thinning (you notice more hair falling, but you can`t easily see the scalp looking into a mirror).  System 2 is for natural hair (uncoloured and untreated) with progressed thinning (you already have far less hair overall and you can easily see the scalp). System 3 is for coloured hair with light thinning. System 4 is for coloured hair with progressed thinning. System 5 is for chemically treated hair (bleached, straightened or relaxed) with light thinning. System 6 is for chemically treated hair with progressed thinning.

What hair types can System 5 Conditioner be used on? It is suitable for all types of hair textures, from straight to curly. This scalp shampoo is suitable for all genders, young and old experiencing thinning or looking to maintain strong, healthy hair.

What do you consider "light thinning" vs. "progressed"? Light thinning would be normal to thin looking. You may be the only one to notice that the hair is thinning. Progressed thinning is more noticeable to others. You may see a widening part, thin stops, visible scalp, or a receding hairline.

Do I have to use this conditioner daily? For best results, it is highly recommended that the Scalp Therapy Conditioner be used daily, along with the Scalp Cleanser Shampoo, Scalp & Hair Treatment and any additional Nioxin treatments/styling products. However, it is not required to use daily. Results may just take longer.

Can this product be used on hair that has been coloured? Yes, although System 3 and 4 Scalp Therapy Conditioners are specifically designed for colour-treated hair. System 5 and 6 are for chemically-treated hair (bleached, straightened, relaxed).

Is this product fragrance free? It has a mild peppermint scent.

Does system 5 contain minoxidil? No, none of the System Kits contain Minoxidil. Products that contain minoxidil clearly state that it contains Minoxidil on the label with the %.

My hair has just highlights, should I use System 5? No, System 3 and 4 Scalp Therapy Conditioners are specifically designed for colour-treated hair.

Does this conditioner offer UV protection? No.