Fierce Black Adhesive
Dispatched from London
Secure checkout
Used by lash artists across the UK
Lash glue questions
Which glue should a beginner start with?
Pearl Black. Its 1–3 second cure gives you time to place each lash properly, and it's forgiving enough for your first volume sets.
What is the fastest Lash Heaven glue?
Fierce Black, at 0.5–1 second. It's for experienced artists who work at speed, so wait until your placement is confident before switching.
Which glue lasts longest on the client?
Pearl Black, with retention of up to 7 weeks with correct use and aftercare. Intense Black and Fierce Clear give up to 6–7 weeks, and Fierce Black up to 5.
Which glue is best for sensitive clients?
All four of our glues are low-fume, and sealing the set with Superbonder FIXATION helps too. Patch test new clients first: put 5 extensions on one eye and, if you want to compare, 5 with a different glue on the other eye. Note down which eye has which glue.
When should I use clear glue?
Use Fierce Clear for coloured and brown lashes, where black glue would show at the base. For a bold, defined lash line, a black glue is the better choice.
How long does lash glue last once opened?
Use it within 2 months of opening. Unopened, it keeps for up to 6 months; write the opening date on the bottle.
Can I keep my glue in the fridge?
Only unopened glue, and only in a hot climate over 30°C. Never refrigerate an opened bottle, because condensation will ruin it.
Why is my glue drying too fast?
Usually high humidity or a warm room. Pick up a little more glue and place faster, or move to a slower glue such as Pearl Black.
Why is my glue not drying?
Usually low humidity, under about 35%. Pick up a little less glue, or move to a faster glue.
How often should I replace my glue drop?
About every 20–30 minutes, and more often in humid conditions. Change it as soon as it turns thicker, gloopy or stringy, always as a fresh drop rather than on top of the old one, and keep it round, because a flat drop dries faster.
0.5–1 second cure. Up to 5 weeks retention. Works from 30% to 80% humidity.
Meet Fierce Black — built for lash artists who work fast and can't control the room. Rated for 45–65% humidity and still curing at both ends of a 30–80% swing, it holds its behaviour when your studio doesn't.
Ultra-thin so it comes off the tip clean, with a deep black finish that defines the lash line. Classic and volume.
Add to your glue — 20% off, applied automatically at checkout
Nichiban Flexi-Tape, Superbonder FIXATION, Jasmine Primer, an airtight storage container, a spare nozzle set or a Divine Silk Volume tray.
Stocking up? 2 glues save 10%, 3 or more save 15% — also automatic. Free UK delivery over £50.
Why You'll Love It
- Fast 0.5–1 sec cure for efficient sets
- Retention up to 5 weeks*
- Works across 30–80% humidity — one of the widest ranges we make
- Thin, easy-to-control formula
- Rich black finish for definition
- Classic and volume sets
Key Details
- Humidity: 45–65% (works between 30–80%)
- Temperature: 20–25°C
- Colour: Black
- Viscosity: Ultra-thin
- Sizes: 2ml / 5ml
Which adhesive is right for you?
| Adhesive | Cure | Retention* | Humidity | Best for |
|---|---|---|---|---|
| Fierce Black | 0.5–1 sec | up to 5 weeks | 45–65% (works 30–80%) | Fast sets and unpredictable studio conditions |
| Intense Black | 1–2 sec | up to 6–7 weeks | 40–60% | Speed with a long hold; low fumes for sensitive clients |
| Fierce Clear | 1–2 sec | up to 6–7 weeks | 45–65% (works 30–80%) | Coloured and brown lashes — invisible finish |
| Pearl Black | 1–3 sec | up to 7 weeks | 50–70% | The longest hold and the most control — every level |
*Retention based on correct use and aftercare.
Not sure which glue suits you? Read The Lash Glue Guide for side-by-side comparisons, storage tips and troubleshooting.
Use within 6 months (unopened) and 2 months after opening. Store in a cool, dry place (18–24°C), away from heat and sunlight. Keep tightly sealed.
For professional use only. Performance may vary depending on storage, environment and application technique.