--- product_id: 24977558 title: "VITAMINS hair cosmetics Keratin Serum with Biotin, Castor Oil & Collagen | Anti-Frizz Heat Protectant, Leave-In Shine Treatment for All Hair Types, Dry, Damaged, Color-Treated, Normal Hair, 4.25 Fl Oz" brand: "vitamins hair cosmetics" price: "€ 7.48" currency: EUR in_stock: false reviews_count: 13 url: https://www.desertcart.hr/products/24977558-vitamins-hair-cosmetics-keratin-serum-with-biotin-castor-oil-collagen store_origin: HR region: Croatia --- # 4-6 months supply per bottle Lightweight, non-greasy hydration Heat protection up to 450°F VITAMINS hair cosmetics Keratin Serum with Biotin, Castor Oil & Collagen | Anti-Frizz Heat Protectant, Leave-In Shine Treatment for All Hair Types, Dry, Damaged, Color-Treated, Normal Hair, 4.25 Fl Oz **Brand:** vitamins hair cosmetics **Price:** € 7.48 **Availability:** ❌ Out of Stock ## Summary > ✨ Unlock salon-smooth, frizz-free hair every day with one powerful drop! ## Quick Answers - **What is this?** VITAMINS hair cosmetics Keratin Serum with Biotin, Castor Oil & Collagen | Anti-Frizz Heat Protectant, Leave-In Shine Treatment for All Hair Types, Dry, Damaged, Color-Treated, Normal Hair, 4.25 Fl Oz by vitamins hair cosmetics - **How much does it cost?** € 7.48 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/24977558-vitamins-hair-cosmetics-keratin-serum-with-biotin-castor-oil-collagen) ## Best For - vitamins hair cosmetics enthusiasts ## Why This Product - Trusted vitamins hair cosmetics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **3-in-1 Power Serum:** Leave-in treatment, heat protectant, and anti-frizz finisher all in one - • **Cost-Effective Luxury:** Less than $0.15 per use for salon-quality shine and strength - • **Long-Lasting Frizz Control:** Smooth, manageable hair for 3-4 days—even in humidity - • **Salon-Secret Keratin Formula:** 80+ years of pro-grade hair care now in your hands - • **Universal Hair Compatibility:** Perfect for all hair types, from fine to curly, color-treated or natural ## Overview VITAMINS hair cosmetics Keratin Serum combines biotin, keratin, collagen, and nourishing oils in a lightweight, leave-in formula that protects hair from heat up to 450°F, tames frizz for days, and works on all hair types. This 4.25 fl oz bottle delivers professional-grade shine, strength, and smoothness with just 1-3 drops per use, lasting 4-6 months and free from harsh chemicals. ## Description Revitalize Your Hair with Our Weightless Keratin Hair Serum, Enriched with Biotin, Collagen & Oils. Tames Frizz, Protects from Heat, Adds Shine & Boosts Thickness. Lightweight, Non-greasy & Built for All Hair Types, It Nourishes, Repairs & Hydrates for Silky, Healthy & Manageable Results Keratin Hair Serum Keratin Thin Hair Mask Keratin Shampoo Keratin Purple Mask Keratin Purple Shampoo Leave In Conditioner Leave In Conditioner Exclusive Professional Hair Care Cosmetics Since 1943 Family-Owned and Operated , Vitamins Hair Cosmetics Has Been Working for 80 Years to Carefully Develop and Lovingly Refine the Absolute Best Luxury Hair Care Products for Head-Turning Glamorous Hair. For Eight Decades, Vitamins Hair Cosmetics Was Available Exclusively to Professional Hair Stylists and Hair Salons. This Marks the First Time That Our Hair Care Products Are Available Directly to the Public. Vitamins Hair Cosmetics was founded in 1943 by Haim Shetrit. In his kitchen, he concocted his first unique hair treatment blends Family-Owned & Operated Since 1943, Vitamins Hair Cosmetics Has Been Working for 80 Years to Carefully Develop & Refine the Absolute Best Luxury Hair Care Products for Head-Turning Glamorous Hair For Eight Decades, Vitamins Hair Cosmetics Was Available Exclusively to Professional Hair Stylists & Hair Salons. This Marks the First Time that Our Hair Care Products Are Available Directly to the Public Glamorous Hair is Our Family Legacy. As Third-Generation Hair Care Experts, Our Tried-and-True Nutrient-Rich Formulas Are the Result of Decades of Expertise & Passion At Vitamins Hair Cosmetics We Blend Modern Technology with Timeless Processes Uncompromising Quality Requires Handling Some Natural Materials by Hand Luxury Hair Care Innovation Since 1943. Glamorous Hair is Our Family Legacy ## Features - SALON-SECRET SINCE 1943 - NOW AVAILABLE TO YOU - For 80+ years our family-owned, third-generation keratin formula was reserved for professional stylists. This is the same lightweight leave-in serum they used behind the chair - now in your hands, with biotin, hydrolyzed keratin, collagen, castor oil, argan oil, and coconut oil for glossy, resilient, salon-smooth hair at home - 3-IN-1: LEAVE-IN + HEAT PROTECTANT + ANTI-FRIZZ FINISHER - One bottle replaces three products. Use it as a daily leave-in on damp hair, as a heat protectant before blow-drying or flat-ironing (up to 450°F styling tools), and as a midday smoothing touch-up. Saves room on your shelf - TAMES FRIZZ + HUMIDITY FOR DAYS, NOT HOURS - Customers report hair stays smooth and manageable 3-4 days after washing - even in humidity. The keratin-collagen blend coats each strand to block frizz, smooth flyaways, and lock in a glass-like shine without stickiness, greasiness, or weigh-down - WORKS ON EVERY HAIR TYPE - FINE TO THICK, STRAIGHT TO CURLY - Fine or thin hair? Use 1 drop. Medium or wavy? 2 drops. Thick, curly, or coarse? 3 drops. Safe for color-treated, bleached, highlighted, keratin-treated, and chemically processed hair. Sulfate-free, paraben-free, alcohol-free, cruelty-free - ONE BOTTLE LASTS 4-6 MONTHS - LESS THAN $0.15 PER USE - At just 1-3 drops per application, this 4.25 fl oz bottle outlasts budget-friendly serums and costs a fraction of premium salon brands. Backed by our 80-year family expertise: You will see visibly softer and shinier hair after your first use ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B01456DJ66 | | Best Sellers Rank | #139 in Hair Styling Serums | | Item Model Number | keratin_hair_serum | | Manufacturer | H.Y. Vitamins | | Package Dimensions | 6.5 x 2.52 x 2.48 inches; 6.4 ounces | ## Product Details - **Hair Type:** All - **Liquid Volume:** 4.25 fluid ounces - **Scent:** Floral ## Images ![VITAMINS hair cosmetics Keratin Serum with Biotin, Castor Oil & Collagen | Anti-Frizz Heat Protectant, Leave-In Shine Treatment for All Hair Types, Dry, Damaged, Color-Treated, Normal Hair, 4.25 Fl Oz - Image 1](https://m.media-amazon.com/images/I/61JXFvf4PjL.jpg) ![VITAMINS hair cosmetics Keratin Serum with Biotin, Castor Oil & Collagen | Anti-Frizz Heat Protectant, Leave-In Shine Treatment for All Hair Types, Dry, Damaged, Color-Treated, Normal Hair, 4.25 Fl Oz - Image 2](https://m.media-amazon.com/images/I/61eQWimTtvL.jpg) ![VITAMINS hair cosmetics Keratin Serum with Biotin, Castor Oil & Collagen | Anti-Frizz Heat Protectant, Leave-In Shine Treatment for All Hair Types, Dry, Damaged, Color-Treated, Normal Hair, 4.25 Fl Oz - Image 3](https://m.media-amazon.com/images/I/61tAKVPhrJL.jpg) ![VITAMINS hair cosmetics Keratin Serum with Biotin, Castor Oil & Collagen | Anti-Frizz Heat Protectant, Leave-In Shine Treatment for All Hair Types, Dry, Damaged, Color-Treated, Normal Hair, 4.25 Fl Oz - Image 4](https://m.media-amazon.com/images/I/61Ui6nip5YL.jpg) ![VITAMINS hair cosmetics Keratin Serum with Biotin, Castor Oil & Collagen | Anti-Frizz Heat Protectant, Leave-In Shine Treatment for All Hair Types, Dry, Damaged, Color-Treated, Normal Hair, 4.25 Fl Oz - Image 5](https://m.media-amazon.com/images/I/81jpr69-D0L.jpg) ## Questions & Answers **Q: Does this product have Formaldehyde and sulfate?** A: No,this unique Keratin Hair Serum doesm't contain Formaldehyde or Sulfate **Q: Is this product safe for keratin treated hair ?** A: I use this product once a week and I cant image it not being safe. I have never had the keratin treatment at a hair salon, but I use a leave in conditioner, heat treatment and infusion therapy keratin replenisher daily on my color treated hair and I have no issues. Plus the keratin protein weekly on top of all the other products with no issues. **Q: Is is this product most effective when applied to dry or wet hair? many thanks.** A: I think the conditioner is meant for wet hair and this is to apply to dry hair after it's been fixed or blow dried. After I'm done blow drying it, I apply it and it gives it a nice shine. But I'm sure it'll have the same effect if applied to wet hair and then have it blow dried. **Q: You add this to wet hair ? Is this a heat protectant?** A: Yes, you add our unique Keratin Hair Serum on damp hair. Please see the Directions section: "Apply a few drops to your palms and spread thoroughly on dry to damp hair from hair root to tips." It Is a heat protector, although you will see it evaporates as it is water based. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Returns hair to childlike condition. *by on Reviewed in the United States April 20, 2026* BEST HAIR PRODUCT OF MY LIFE!!!!I’ve purchased hundreds, if not thousands of hair products over multiple decades of my life.Suffice it to say I have a veritable arsenal of hair products. There are many products in my arsenal that offer very good results for what I’m looking for in a hair product, but this product goes way above and beyond, offering OUTSTSTANDING results. It didn’t just soften my hair, as many products do, my hair feels brand new, like it did seven decades ago when I was a completely natural blonde. Beyond the softness and sheen it gave my hair, it also tripled the volume of my hair just because it made all the damaged hair healthy again. I’ll be a lifetime consumer of this product. PLEASE don’t discontinue it! ### ⭐⭐⭐⭐⭐ Let be iy *by on Reviewed in the United States May 2, 2026* This product smells great!! I can already see a difference in shine and softness. When I apply it I feel like my hair instantly feels stronger and more elastic. ### ⭐⭐⭐⭐⭐ Very moisturizing and repairs dry brittle hair. *by on Reviewed in the United States April 18, 2026* I love this product. I am 68 y.o. and only wash my hair once a week as it is dry. My hair is thick and coarse but I still color it so I need some help with moisture. This item FITS the bill. I apply about a dime sized amount in my hands and rub it through my strands concentrating on the middle and ends while my hair is a little damp. It has helped tremendously and leaves my hair looking and feeling moisturized. I've ordered this a few times and will continue. ## Frequently Bought Together - VITAMINS hair cosmetics Keratin Protein Hair Serum - Anti Frizz Control Hair Oil Repair Treatment - Gloss Shine & Heat Protectant for Frizzy Dry Damaged Locks - VITAMINS hair cosmetics Keratin Hair Mask Deep Conditioner - Biotin Collagen Protein & Castor Oil Repair for Dry Damaged Hair - Conditioning Treatment for Curly or Straight Thin Fine Locks - VITAMINS hair cosmetics Keratin Shampoo Treatment - Biotin & Collagen Protein with Castor Oil for Curly Wavy or Straight Locks - Sulfate Free Product for Dry Damaged or Color Treated Hair --- ## 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.hr/products/24977558-vitamins-hair-cosmetics-keratin-serum-with-biotin-castor-oil-collagen](https://www.desertcart.hr/products/24977558-vitamins-hair-cosmetics-keratin-serum-with-biotin-castor-oil-collagen) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-15*