Nioxin System 4 Duo for Colored Hair w/Thinning
$32.99
$88
63% off
Reference Price
Condition: New
Size: 33.8 oz/bottle
Top positive review
4 people found this helpful
a lifelong staple – cleanses, stimulates, and delivers results for overprocessed hair
By VanillaPepper on Reviewed in the United States on June 4, 2025
I’ve been using Nioxin System 4 for years, and despite trying numerous other shampoos and conditioners, it remains a constant fixture in my shower routine. While I don’t use it daily, as overuse can be drying and slightly color-stripping, once a week, it’s exactly what overprocessed, thinning, or fragile hair needs to reset and thrive. Performance: System 4 is meticulously designed for chemically treated, noticeably thinning hair, and it delivers on its promise. It deeply cleanses the scalp, enhances circulation, and effectively removes buildup that clogs follicles. My hair and scalp always feel balanced, invigorated, and lighter after use. The shampoo and conditioner have a smooth and creamy texture, neither runny nor heavy. Over time, I’ve noticed a noticeable improvement in hair density and scalp comfort. Fragrance & Feel: The scent is fresh, clean, and slightly minty, with a salon-quality fragrance that’s pleasant and not overpowering. There’s a pleasant cooling sensation on the scalp, which enhances the effectiveness of the product. Packaging Details: I ordered the liter duo, and they arrived perfectly sealed, with two different colored pumps. This thoughtful detail is especially helpful when you’re washing your hair with eyes full of soap. Although it may seem small, not having to guess which bottle is which is a significant advantage. Having the pumps included, without having to beg for them in-store, is a big win. Everything was wrapped securely, ensuring no leaking or issues. Value: While prices have increased, this set still offers excellent value for the quality and quantity of products you receive. It provides true salon-grade scalp and hair therapy in large bottles that last for months. It’s not a trendy product; it’s a professional staple with a proven track record. Key Ingredients (System 4): • Peppermint Oil: Cooling and stimulating circulation. • White Tea Extract: Antioxidant support. • Nettle Root Extract: Soothing scalp. • Niacinamide & Biotin: Supporting hair strength. • Sodium Laureth Sulfate: Deep cleansing agent. • Menthol: Giving that signature tingle. Nioxin System 4 is a trusted, proven, and effective hair care product that delivers results every time. Whether you’re recovering from damage, breakage, or just need a weekly detox, this set is the product you keep around when your hair needs to get back on track.
Top critical review
Shampoo is Thin
By Amazon Customer on Reviewed in the United States on April 9, 2025
This shampoo is pretty thin, the opposite of a good thick shampoo which I prefer. Too, the price is quite high and has gone up by $14 in one week from my first purchase. And after 3 uses, one of the provided pumps would not longer work, so the pumps are of poor quality. That said, the amount of hair in my comb after washing my hair has dropped significantly, so it works pretty well.
Sort by:
Filter by:
Sorry, no reviews match your current selections.
Try clearing or changing some filters.Show all reviews
Show more reviews