BL BL Lash Sealant for Extensions Black Diamond — 0.24 fl.oz Tinted, Waterproof Brush Applicator

This lightweight, tinted sealant is formulated to lock in salon or DIY extensions and clusters, reduce daily fallout, and keep individual lashes aligned for a polished look. The 0.24 fl.oz brush-applied liquid dries into a thin, waterproof coating that rinses clean with warm water and is designed for daily use after lashes are completely dry. Professional technicians use it in salons and many customers report longer fill intervals when they make the sealant part of their routine.

How does BL Lashes Black Diamond help my lash fills last longer?

The sealant creates a protective barrier around each extension bond, resisting moisture and friction that usually cause early lifting. With consistent daily application on dry lashes, many users extend salon fills from about two weeks to three or four weeks.

• Thin, even waterproof layer shields bonds from sweat, humidity, and oils.
• Brush applicator targets each extension for precise coverage.
• Recommended daily after washing lashes to maintain protection.

Will this product change the look of my lash extensions?

Yes—Black Diamond deposits a dark tint that enhances definition and mimics the volumizing effect of mascara without clumping. It helps align stray lashes so the set looks neater and fuller while maintaining a natural extension profile.

• Subtle dark finish defines each extension without heavy buildup.
• Non-flaking formula preserves a clean appearance throughout the day.
• One thin coat is enough to darken and smooth lashes without stiffness.

Is BL Lashes Black Diamond safe for natural lashes and sensitive eyes?

The formula includes conditioning ingredients like Biotin, Panthenol, Allantoin, and Hyaluronic Acid to support natural lash health while protecting extensions. It was tested for irritation in a 24-hour patch test and certified by Intertek with no irritation reported, though you should avoid direct eye contact.

• Infused with gentle nutrients to help maintain lash strength and moisture.
• Intertek-verified patch test showing no irritation in study conditions.
• Apply only to lashes; discontinue if discomfort or irritation occurs.

How do I use the sealant for best results and fast maintenance?

Shake the bottle for about ten seconds before each use to remix the pigment, then brush one thin coat onto completely dry lashes. Avoid over-application; a light layer is enough for protection and will make the small bottle last much longer.

• Shake well every time—pigment settles and must be redistributed.
• Apply only to dry lashes, after cleansing and drying post-wash.
• Rinse clean with warm water—no special remover required.

Who is this for? BL Lashes Black Diamond is made for anyone who wears extensions or clusters and wants longer retention, tidier lash alignment, and a mascara-like finish without daily mascara application. It’s also chosen by lash professionals as a salon-grade finishing step and by active people who need sweat- and water-resistant performance. If you want a small, easy-to-use product that nourishes natural lashes while extending fills, this sealant fits into both professional and at-home routines.

Ingredients

Biotin