{"product_id":"nioxin-system-4-scalp-hair-shampoo-for-color-treated-damaged-hair-33-8-fl-oz-thickening-color-protecting","title":"NIOXIN System 4 Scalp + Hair Shampoo for Color‑Treated, Damaged Hair — 33.8 fl oz, Thickening \u0026 Color‑Protecting","description":"\u003cstrong\u003eNioxin System 4 Scalp + Hair Shampoo is a professional-grade cleanser formulated to gently remove residue and hydrate color-treated, damaged hair while supporting the appearance of thicker, fuller-looking strands.\u003c\/strong\u003e\n\n\u003cp\u003eDesigned as the first step in Nioxin’s three-part thinning hair regimen, System 4 targets dry, chemically treated hair with progressed thinning. Its Activ Renewal and Pro-Color Shield technologies lift sebum, fatty acids and environmental buildup from the scalp and hair without stripping color. Clinically and dermatologically tested, this shampoo prepares the scalp and fiber for subsequent thickening treatments and is sized for salon-style at-home use at 33.8 fl oz.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this shampoo cleanse without fading my color?\u003c\/h3\u003e\n\u003cp\u003eSystem 4 combines gentle surfactants with Pro-Color Shield to remove impurities while protecting dyed hair. The formula clears residue that can dull color, yet preserves pigments so treatments last longer between salon visits.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePro-Color Shield supports color retention during cleansing\u003c\/li\u003e\n  \u003cli\u003eRemoves sebum and environmental residues that dull hair\u003c\/li\u003e\n  \u003cli\u003eBalanced cleansing action suited for chemically treated strands\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat visible changes can I expect and how soon?\u003c\/h3\u003e\n\u003cp\u003eUsers reported improvements in thickness, density and fullness with consistent daily use; many notice changes within about 30 days. System 4 focuses on scalp clarity and fiber integrity, which helps hair look fuller and reduces the appearance of thinning over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClinically observed increase in hair fullness and density\u003c\/li\u003e\n  \u003cli\u003eReduces visible thinning by strengthening hair resilience\u003c\/li\u003e\n  \u003cli\u003eVisible results with routine use as directed (daily application recommended)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use System 4 for best results?\u003c\/h3\u003e\n\u003cp\u003eApply to wet hair, massage into the scalp for about one minute to allow the active system to lift impurities, then rinse thoroughly. For a complete program, follow with Nioxin System 4 Scalp Therapy Conditioner and the Scalp and Hair Treatment to amplify thickening effects.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse on wet hair; lather and massage scalp for one minute\u003c\/li\u003e\n  \u003cli\u003eRinse thoroughly and pair with System 4 conditioner and treatment\u003c\/li\u003e\n  \u003cli\u003eDaily use yields the most consistent improvements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich scalp and hair concerns does System 4 address?\u003c\/h3\u003e\n\u003cp\u003eThis shampoo is formulated for dry, damaged, color-treated hair with progressed thinning. It helps clear follicle-clogging substances, moisturizes chemically treated hair, and primes hair fibers for products that add structure and volume.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTargets dry, chemically treated hair with visible thinning\u003c\/li\u003e\n  \u003cli\u003eRemoves sebum, fatty acids and environmental buildup\u003c\/li\u003e\n  \u003cli\u003eMoisturizes to reduce breakage and support hair strength\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Nioxin System 4 is aimed at people with color-treated, dry or damaged hair who are experiencing progressed thinning and want a salon-grade shampoo to cleanse, hydrate and prepare the scalp for thickening treatments. It’s suitable for daily at-home use and for those who prefer a targeted, multi-step regimen to improve the look of hair density without compromising color. For optimal outcomes, use the full System 4 kit—cleanser, conditioner, and scalp treatment—consistent with product directions.\u003c\/p\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eAqua, Sodium Laureth Sulfate, Sodium Lauryl Sulfate, Citric Acid, Sodium Chloride, PPG-2 Hydroxyethyl Coco\/Isostearamide, Sodium Citrate, Sodium Xylenesulfonate, Sodium Benzoate, Salicylic Acid, Sodium Hydroxide, Tetrasodium EDTA, Mentha Piperita Oil, Mentha Arvensis Leaf Oil, Menthol, Trisodium Ethylenediamine Disuccinate, Methylparaben, Polyquaternium-10, Propylene Glycol, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Biotin, Lecithin, Niacinamide, Panthenol, Tocopheryl Acetate, Foeniculum Vulgare Fruit Extract, Sodium Acetate, Isopropyl Alcohol, CI 19140, Faex Extract, Acer Saccharum Extract, Citrus Limon Peel Extract, Saccharum Officinarum Extract, Vaccinium Myrtillus Leaf Extract, CI 42090, Citrus Aurantium Dulcis Fruit Extract, CI 17200, Potassium Sorbate\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this on color-treated hair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. System 4 is formulated with Pro-Color Shield to cleanse while helping protect color-treated hair.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I use the shampoo?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use daily as the first step in the System 4 regimen for best results in preparing scalp and hair.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NIOXIN","offers":[{"title":"Default Title","offer_id":49621823586442,"sku":"B001390336","price":138.27,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/4825\/6394\/files\/nioxin-system-4-front-bottle_d9ab08ec-73f9-430d-8568-6969edac7f14.jpg?v=1782862058","url":"https:\/\/auviraskincare.com\/products\/nioxin-system-4-scalp-hair-shampoo-for-color-treated-damaged-hair-33-8-fl-oz-thickening-color-protecting","provider":"Auvira Beauty","version":"1.0","type":"link"}