--- product_id: 269150373 title: "Biotin Ultimate Strength, Clear, 0.55 Fluid Ounce" brand: "nail-aid" price: "€ 14.40" currency: EUR in_stock: true reviews_count: 7 category: "Nail Aid" url: https://www.desertcart.pt/products/269150373-biotin-ultimate-strength-clear-0-55-fluid-ounce store_origin: PT region: Portugal --- # Clear Liquid Formula Biotin B7 Strength Boost Top 300 Nail Polish Rank Biotin Ultimate Strength, Clear, 0.55 Fluid Ounce **Brand:** nail-aid **Price:** € 14.40 **Availability:** ✅ In Stock ## Summary > 💅 Strengthen your nails, elevate your style – because your hands deserve the best! ## Quick Answers - **What is this?** Biotin Ultimate Strength, Clear, 0.55 Fluid Ounce by nail-aid - **How much does it cost?** € 14.40 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/269150373-biotin-ultimate-strength-clear-0-55-fluid-ounce) ## Best For - nail-aid enthusiasts ## Why This Product - Trusted nail-aid brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Crystal Clear Finish:** A sleek, transparent polish that enhances natural nail beauty without color interference. - • **Trusted Nail Hardener:** Join thousands climbing the ranks in nail care with a product that’s #251 in Nail Polish. - • **Compact & Travel-Ready:** 0.55 fl oz size fits perfectly in your professional kit or purse for on-the-go care. - • **Power-Packed Biotin Formula:** Fortify your nails with Vitamin B7 for visible strength and growth. - • **Clinically Loved, Millennial Approved:** Rated 4.3⭐ by over 14,000 users who swear by its nail-hardening magic. ## Overview NAIL-AID Biotin Ultimate Strength is a clear nail treatment enriched with Vitamin B7 designed to harden and strengthen nails. With a compact 0.55 fl oz liquid formula, it ranks #251 in nail polish and boasts a 4.3-star rating from over 14,000 users, making it a trusted choice for professional-quality nail care. ## Description Nail-Aid Biotin Ultimate Strength Vitamin B7 Nail Polish Review: Very Good! - It is as good as Mavala blue water. Very good product, really helped for strengthen and grow my nails. Review: Bad experience - Was very bad for my nails! It literally destroyed them and made them way worse ## Features - Item Category: Nail Treatment - Item Trademark: Nail-Aid - manufacturer: Generic ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01DG10XA6 | | Best Sellers Rank | #24,722 in Beauty ( See Top 100 in Beauty ) #251 in Nail Polish | | Brand | Nail-Aid | | Brand Name | Nail-Aid | | Customer Reviews | 4.3 out of 5 stars 14,281 Reviews | | Item Form | Liquid | | Item Weight | 2.4 Ounces | | Item form | Liquid | | Item weight | 2.4 Ounces | | Liquid Volume | 0.55 Fluid Ounces | | Liquid volume | 0.55 Fluid Ounces | | Manufacturer | Nail-Aid | | Manufacturer Part Number | 08873 | | Model Number | 08873 | | Number of Items | 1 | | Size | 15 ml (Pack of 1) | | Specialty | Nail Hardener | | UPC | 839186088737 | ## Product Details - **Brand:** Nail-Aid - **Item form:** Liquid - **Item weight:** 2.4 Ounces - **Liquid volume:** 0.55 Fluid Ounces - **Specialty:** Nail Hardener ## Images ![Biotin Ultimate Strength, Clear, 0.55 Fluid Ounce - Image 1](https://m.media-amazon.com/images/I/71ykSzVUK1L.jpg) ## Questions & Answers **Q: Does this help whiten your nail** A: Nail-Aid Biotin neither whiten nor strengthened my nails. Unfortunately, I purchased two bottles of this product. Initially, it appeared my nails were getting stronger. But not only did they begin to break again, but the condition of my nails also worsened. Moreover, the contents of this product are not listed, so you are not aware of what you are putting on your nails. The merchant does offer a return policy but the shipping cost that the merchant require is either equal or greater than the Nail-Aid product. As such, you are stuck with a product that does not live up to your expectations nor their claim of strengthening your nail. **Q: Which one to buy for vertical split nails?** A: I purchased both and wish I only purchased the Keratin because the Biotin polish peeled right off my nail the following day. I’ve never seen anything like that before and it was applied over their Keratin polish so either it was so thick that it didn’t lay down flat or it’s not compatible with their own Keratin nail strengthener. The Keratin nail strengthener was nicer and laid down flat on the nail. I’m very disappointed in this Biotin polish and I’ve used several brands (including Sally Hanson) which never peeled off in a solid layer as if it was nail resistant like this did. **Q: which is better for nails, keratin or biotin?** A: If your nails are damaged, it’s better biotin **Q: Is there suppose to be a brush on the end of the applicator?** A: Yes it has a brush on the end ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very Good! *by A***N on 17 June 2026* It is as good as Mavala blue water. Very good product, really helped for strengthen and grow my nails. ### ⭐ Bad experience *by R***L on 30 May 2025* Was very bad for my nails! It literally destroyed them and made them way worse ### ⭐⭐⭐ منتج *by ا***! on 3 February 2024* جربته ترا مو مره واو يعني بستمر واشوف ## Frequently Bought Together - Nail-Aid Biotin Ultimate Strength - Nail Treatment & Strengthener - Clear, 0.55 Fl Oz (08873) - Nail-Aid Keratin 3 Day Growth Nail Treatment & Strengthener, Clear, 0.55 Fl Oz - Onyx Professional Hard as Hoof Nail Strengthening Cream with Coconut Scent, Nail Growth & Conditioning Cuticle Cream Stops Splits, Chips, Cracks & Strengthens Nails, 1 oz --- ## 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.pt/products/269150373-biotin-ultimate-strength-clear-0-55-fluid-ounce](https://www.desertcart.pt/products/269150373-biotin-ultimate-strength-clear-0-55-fluid-ounce) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-08-03*