--- product_id: 122682066 title: "F.A.T.T. Thickening Biotin Shampoo - Formulated for Extensions + Thin Hair - Sulfate & Paraben Free - Keratin & Color Safe Volumizing Shampoo, 8.5oz" brand: "big kizzy" price: "$68.05" currency: USD in_stock: true reviews_count: 3 url: https://www.desertcart.us/products/122682066-f-a-t-t-thickening-biotin-shampoo-formulated-for-extensions store_origin: US region: United States of America --- # Biotin & ProVitamin B5 Sulfate & Paraben Free 11 Amino Acids F.A.T.T. Thickening Biotin Shampoo - Formulated for Extensions + Thin Hair - Sulfate & Paraben Free - Keratin & Color Safe Volumizing Shampoo, 8.5oz **Brand:** big kizzy **Price:** $68.05 **Availability:** ✅ In Stock ## Summary > ✨ Elevate Your Hair Game with Big Kizzy! ## Quick Answers - **What is this?** F.A.T.T. Thickening Biotin Shampoo - Formulated for Extensions + Thin Hair - Sulfate & Paraben Free - Keratin & Color Safe Volumizing Shampoo, 8.5oz by big kizzy - **How much does it cost?** $68.05 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/122682066-f-a-t-t-thickening-biotin-shampoo-formulated-for-extensions) ## Best For - big kizzy enthusiasts ## Why This Product - Trusted big kizzy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Color Safe:** Perfect for color-treated and keratin-treated hair! - • **Salon-Approved:** Crafted by hairdressers, trusted by professionals! - • **Thickening Power:** Transform your hair with our volumizing formula! - • **Cruelty-Free Care:** Ethically made, because your hair deserves the best! - • **Gentle Yet Effective:** Weightless moisture for all hair types! ## Overview Big Kizzy F.A.T.T. Thickening Biotin Shampoo is an 8.5oz volumizing shampoo designed specifically for extensions and fine hair. It is sulfate and paraben-free, enriched with biotin, ProVitamin B5, and a blend of 11 amino acids to nourish and strengthen hair while providing weightless moisture. This salon-approved formula is perfect for color-treated and keratin-treated hair, ensuring your extensions stay in place without any oily residue. ## Description Big Kizzy F.A.T.T. Thickening Biotin Shampoo - Formulated for Extensions + Thin Hair - Sulfate & Paraben Free - Keratin & Color Safe Volumizing Shampoo, 8.5oz ## Features - THICKENING EXTENSION SHAMPOO - BIG KIZZY F.A.T.T. volumizing shampoo is formulated to thicken and volumize hair with no sticky residue like other thickening shampoo and conditioner combos. Formulated for tape in hair extension wearers, F.A.T.T. is the best hair extension shampoo! Sulfate free and paraben free. - HIGH QUALITY INGREDIENTS - Fortified with Biotin & ProVitamin B5, two potent vitamins that add shine, & nourish and strengthen hair. A cocktail of 11 amino acids help strengthen, repair and condition the hair shaft. With regular use, hair will look and feel fuller, thicker and healthier. - WEIGHTLESS MOISTURE - This daily hair thickening shampoo is gentle, yet powerful and will help prevent future breakage by keeping hair strong. While great for all hair types, F.A.T.T. is a weightless moisturizing shampoo specially formulated for fine hair and tape in hair extensions. - HIGH PERFORMANCE- F.A.T.T. is a daily thickening shampoo for fragile color treated hair, keratin treatments/brazilian blowouts and made for the unique needs of hair extensions. Free of argan oil or other oils that can cause your extensions to slip out. - PROTECT YOUR HAIR + EXTENSIONS - Cruelty Free. No silicone, Oil Free, Paraben Free, Sulfate Free and Alcohol Free. Big Kizzy is hairdresser inspired, salon approved, and made in the USA! ## Product Details - **Brand:** Big Kizzy - **Item Form:** Liquid - **Hair Type:** Thin - **Scent:** Clove - **Age Range (Description):** All ## Images ![F.A.T.T. Thickening Biotin Shampoo - Formulated for Extensions + Thin Hair - Sulfate & Paraben Free - Keratin & Color Safe Volumizing Shampoo, 8.5oz - Image 1](https://m.media-amazon.com/images/I/61gZdmB2HoL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Favorite shampoo *by A***Y on Reviewed in the United States on April 19, 2019* Leaves my hair super soft and silky!! ### ⭐ 1.0 out of 5 stars Don’t use if you have tape in extensions *by A***A on Reviewed in the United States on November 26, 2022* I’m a professional stylist of over 15 years. This is the worst shampoo for extensions. If you have tape in extensions absolutely do not use this shampoo- it will make them slip out. Horrible product ### ⭐ 1.0 out of 5 stars Shampoo *by B*** on Reviewed in the United States on April 1, 2022* Didn’t work - hair felt dryer :( ## Frequently Bought Together - Big Kizzy F.A.T.T. Thickening Biotin Shampoo - Formulated for Extensions + Thin Hair - Sulfate & Paraben Free - Keratin & Color Safe Volumizing Shampoo, 8.5oz - Big Kizzy F.A.T.T. Thickening & Volumizing Biotin Conditioner for Extensions, Hair Color & Keratin Treatments - Paraben & Sulfate Free - 8.5oz - NOW Foods, Certified Organic Monk Fruit Liquid, Zero-Calorie Liquid Sweetener, Non-GMO, Low Glycemic Impact, 2-Ounce --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/122682066-f-a-t-t-thickening-biotin-shampoo-formulated-for-extensions](https://www.desertcart.us/products/122682066-f-a-t-t-thickening-biotin-shampoo-formulated-for-extensions) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-08*