---
product_id: 1568735
title: "BL Lashes Black Diamond | Lash Sealant for Extensions — Extends Fills to 3-4 Weeks | Dark Mascara-Like Finish, Waterproof Coating, Brush Applicator (0.24 fl.oz)"
brand: "bl bl"
price: "S$26"
currency: SGD
in_stock: true
category: "Bl Bl"
url: https://www.desertcart.sg/products/1568735-bl-lashes-black-diamond-lash-sealant-for-extensions-extends-fills
store_origin: SG
region: Singapore
---

# Extends fills to 3-4 weeks Waterproof & sweat-resistant coating Precision brush applicator BL Lashes Black Diamond | Lash Sealant for Extensions — Extends Fills to 3-4 Weeks | Dark Mascara-Like Finish, Waterproof Coating, Brush Applicator (0.24 fl.oz)

**Brand:** bl bl
**Price:** S$26
**Availability:** ✅ In Stock

## Summary

> 💎 Seal the deal on flawless lashes—because your extensions deserve the Black Diamond treatment.

## Quick Answers

- **What is this?** BL Lashes Black Diamond | Lash Sealant for Extensions — Extends Fills to 3-4 Weeks | Dark Mascara-Like Finish, Waterproof Coating, Brush Applicator (0.24 fl.oz) by bl bl
- **How much does it cost?** S$26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/1568735-bl-lashes-black-diamond-lash-sealant-for-extensions-extends-fills)

## Best For

- bl bl enthusiasts

## Why This Product

- Trusted bl bl brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Clean-Up:** Rinses off with warm water—no remover, no residue, just fresh lashes ready to slay again.
- • **Nourish While You Seal:** Infused with Biotin, Panthenol & Hyaluronic Acid to keep natural lashes healthy and irritation-free.
- • **Trusted by Lash Experts:** Salon-grade formula favored by top lash technicians for unbeatable retention and flawless results.
- • **Long-Lasting Lash Perfection:** Extend your lash fills from 2 to 4 weeks with daily sealing—because your time is precious.
- • **Mascara-Level Definition Without the Mess:** Dark, clump-free finish that aligns and volumizes lashes like a pro, no mascara needed.

## Overview

BL Lashes Black Diamond Lash Sealant is a professional-grade, waterproof coating that extends lash extension fills up to 3-4 weeks. Featuring a dark, mascara-like finish and a precision brush applicator, it nourishes natural lashes with Biotin and Hyaluronic Acid while providing sweat and humidity resistance. Trusted by lash technicians and easy to rinse off with warm water, this cruelty-free, hypoallergenic formula ensures long-lasting, polished lashes without clumping or irritation.

## Description

desertcart.com: BL Lashes Black Diamond | Lash Sealant for Extensions — Extends Fills to 3-4 Weeks | Dark Mascara-Like Finish, Waterproof Coating, Brush Applicator (0.24 fl.oz) : Beauty & Personal Care

## Features

- SHAKE WELL, THEN SEAL FOR LONGER-LASTING FILLS: Customers report extending fills from every 2 weeks to 3-4 weeks with consistent daily use. Apply one thin coat to completely dry lashes after every wash — waterproof protection against sweat, humidity, and daily wear. Shake the bottle for 10 seconds before every use.
- MASCARA-LIKE FINISH WITHOUT THE HASSLE: Dark tinted coating defines and aligns each lash extension for a fuller, polished look — even rogue lashes snap back into place. Delivers the volume of mascara with the protection of a professional sealant, without clumping or flaking.
- LASH TECHNICIANS CHOOSE IT TOO: Used and recommended by professional lash artists in their salons. One verified lash tech reviewer wrote: "My clients' retention is out of this world with this product" — professional-grade formula trusted for both salon application and daily home maintenance.
- GENTLE NOURISHMENT FOR NATURAL LASHES: Infused with Biotin, Panthenol, Allantoin, and Hyaluronic Acid — nourishing your natural lashes while keeping extensions in place. Intertek-certified with zero irritation in a 24-hour patch test. Apply to lashes only; avoid direct eye contact.
- RINSES CLEAN WITH WARM WATER — NO REMOVER NEEDED: Intertek-verified formula improves washability by 96%. Simply rinse with lukewarm water — no special remover, no residue, no fuss. The brush applicator is thin enough to reach every lash, making it easy to apply even half-asleep.
- HOW TO GET THE BEST RESULTS: Shake the bottle well for 10 seconds before every use — the pigment settles and shaking restores full color and consistency. Apply one thin coat to completely dry lashes only. Do not over-apply — a little goes a long way, and the bottle lasts longer than its size suggests.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007PV2JV0 |
| ASIN  | B007PV2JV0 |
| Best Sellers Rank | #39,932 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #183 in False Eyelash Adhesives |
| Brand Name | BL BL |
| Color | Black Diamond |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,709) |
| Item Dimensions | 5 x 1 x 1 inches |
| Item Form | Individual |
| Item model number  | SG_B007PV2JV0_US |
| Manufacturer | AG Co., Ltd |
| Manufacturer  | AG Co., Ltd |
| Material Features | Cruelty Free, Fragrance Free, Hypoallergenic |
| Material Type | Polymer |
| Mount Type | Glue-On |
| Number of Items | 1 |
| Product Dimensions  | 5 x 1 x 1 inches; 0.71 ounces |
| UPC | 773490278647 |
| UPC  | 773490278647 |

## Product Details

- **Brand:** BL BL
- **Color:** Black Diamond
- **Item dimensions L x W x H:** 5 x 1 x 1 inches
- **Material:** Polymer
- **Material Feature:** Cruelty Free, Fragrance Free, Hypoallergenic

## Images

![BL Lashes Black Diamond | Lash Sealant for Extensions — Extends Fills to 3-4 Weeks | Dark Mascara-Like Finish, Waterproof Coating, Brush Applicator (0.24 fl.oz) - Image 1](https://m.media-amazon.com/images/I/31ZyMGiQqkL.jpg)
![BL Lashes Black Diamond | Lash Sealant for Extensions — Extends Fills to 3-4 Weeks | Dark Mascara-Like Finish, Waterproof Coating, Brush Applicator (0.24 fl.oz) - Image 2](https://m.media-amazon.com/images/I/51vTW9xYYKL.jpg)
![BL Lashes Black Diamond | Lash Sealant for Extensions — Extends Fills to 3-4 Weeks | Dark Mascara-Like Finish, Waterproof Coating, Brush Applicator (0.24 fl.oz) - Image 3](https://m.media-amazon.com/images/I/51q0VaoJXFL.jpg)
![BL Lashes Black Diamond | Lash Sealant for Extensions — Extends Fills to 3-4 Weeks | Dark Mascara-Like Finish, Waterproof Coating, Brush Applicator (0.24 fl.oz) - Image 4](https://m.media-amazon.com/images/I/41w8ShkUHlL.jpg)
![BL Lashes Black Diamond | Lash Sealant for Extensions — Extends Fills to 3-4 Weeks | Dark Mascara-Like Finish, Waterproof Coating, Brush Applicator (0.24 fl.oz) - Image 5](https://m.media-amazon.com/images/I/41SAe6gSw5L.jpg)

## Questions & Answers

**Q: Is this safe for sensitive eyes?**
A: Apply only to lashes — avoid direct eye contact. Patch test recommended for sensitive users.

**Q: My lashes felt stiff / crunchy after using it.**
A: You may have applied too much. A single thin coat is all you need — the formula is concentrated.

**Q: Will Crystal Drop leave white residue?**
A: No. Apply to dry lashes in a thin layer and comb through. Dries completely clear.

**Q: Is Black Diamond really black or just watery?**
A: Shake well before every use. The pigment settles — 10 seconds of shaking restores full color.

## Frequently Bought Together

- BL Lashes Black Diamond Lash Coating Sealant, Eyelash Extension Aftercare, Protective topcoat lash coating, 0.24 fl.oz
- STACY LASH Eyelash Extension Shampoo + Brush / 1.69 fl.oz / 50ml / Eyelid Foaming Cleanser/Wash for Extensions & Natural Lashes/Safe Makeup Remover/Supplies for Professional & Home Use
- BL Lashes Crystal Drop Lash Coating Sealant, Eyelash Extension Aftercare, Protective Topcoat, 0.24 fl.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.sg/products/1568735-bl-lashes-black-diamond-lash-sealant-for-extensions-extends-fills](https://www.desertcart.sg/products/1568735-bl-lashes-black-diamond-lash-sealant-for-extensions-extends-fills)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-09-13*