Bellestore Academy · Lash Lift
Keratin serum and essence are often used as a nourishing finishing step after a Lash Lift. Here, you will receive a clear procedure, see the difference between two current options, and learn how to avoid mistakes that make the treatment unnecessarily messy or unsafe.
Updated August 10, 2026 · Approx. 8 min read
Quick answer
Apply a compatible finishing product only after the treatment steps are completed and residues have been removed according to the system's instructions. Lomansa Keratin Boost Serum should be left on for 3–5 minutes and is a leave-on product. 24k Essence should be left on for at least 2 minutes and is also a leave-on product. Always follow the instructions for the specific Lash Lift system and product you are using – do not combine multiple finishing products on your own initiative.
What does keratin mean after a Lash Lift?
In a Lash Lift routine, "keratin" usually refers to a nourishing finishing product applied after the shaping steps. The product might be called a keratin serum, essence, nourishing lotion, or step 3. The names are not a guarantee that the products have the same contents or are used in the same way.
The important thing is therefore not just what is written on the front of the bottle, but what place the product has in the order of operations, how long it should remain on, and whether it is intended for the system you are working with. A general Academy guide can help you understand the principle, but the product's and system's own instructions always take precedence.
Keratin, serum, and essence – are they the same thing?
| Term | What it tells you | What you need to check |
|---|---|---|
| Keratin product | The product contains or is marketed around keratin, often hydrolyzed keratin. | Full ingredient list, area of use, and processing time. |
| Serum | Describes primarily the product format, not a standardized function. | Whether the product is a treatment step, aftercare, or a home product. |
| Essence or step 3 | Often used as a finishing product in a specific system. | Whether it should be left on, how much is needed, and compatible treatments. |
Order of operations: how to use serum after a Lash Lift
-
Complete steps 1 and 2.
Work according to the times and safety instructions for your Lash Lift system. This guide does not replace the system's treatment protocol. -
Perform any tinting at the right stage.
If the treatment includes lash tinting, you should follow the order specified by the manufacturers for the tint and lift system. -
Remove residues thoroughly.
Remove the previous product according to the instructions before applying the finishing product. Avoid mixing residues from different steps. -
Apply a thin layer of the chosen finishing product.
Lomansa Keratin Boost Serum should be left on for 3–5 minutes. 24k Essence should be left on for at least 2 minutes. Both products are leave-on according to their current product instructions. -
Shape and finish.
Gently separate and brush the lashes. Give the customer aftercare advice that aligns with the entire treatment system and the finishing product you have used.
Two current finishing products at Bellestore
The products below are not ranked. The choice should be guided by the treatment system, desired working method, and the product's own instructions.
Price, stock, and product details were verified on August 10, 2026. Current information is always shown on the product page.
Comparison: Keratin Boost Serum or 24k Essence?
| Product | Usage | Time | Rinse off? | Storage after opening |
|---|---|---|---|---|
| Keratin Boost Serum | Finishing step after Lash Lift | 3–5 min | No | Cool and dark, preferably refrigerator; use within 9 months |
| 24k Essence | Finishing step after Lash or Brow Lift | At least 2 min | No | Upright, room temperature, protected from sunlight; approx. 3 months |
6 common mistakes with serum after a Lash Lift
1. You use too much
A thin, even layer is sufficient. Too much product makes the lashes heavy and harder to separate.
2. You rinse off a leave-on product
Both examples in the guide should be left on according to their product instructions.
3. You mix different systems
Products with similar names are not automatically interchangeable. Check compatibility first.
4. You apply over residues
Remove the previous treatment step according to the instructions so that the products do not mix on the lashes.
5. You use the serum on extensions
According to the product information, Keratin Boost Serum should not be used on eyelash extensions.
6. You forget hygiene and storage
Keep the applicator and bottle opening clean, close immediately, and follow the product's temperature and shelf-life indications.
Checklist before finishing the treatment
- Right product for the right treatment and system
- Previous step removed according to instructions
- Thin and even layer with a clean applicator
- Correct processing time for the chosen finishing product
- Lashes separated and customer informed about aftercare
- Opening date noted and product stored correctly
Common questions about keratin after a Lash Lift
What does keratin do after a Lash Lift?
Keratin products are used as a nourishing, finishing step. The exact function depends on the formulation, so read the ingredient list and product instructions instead of assuming based on the product name.
When should the serum be applied?
Once the treatment steps are complete and previous products have been removed according to the system's instructions. In the case of combined tinting, follow the manufacturer's specified order.
Should keratin serum be rinsed off?
Not always. According to current product information, Lomansa Keratin Boost Serum and 24k Essence should be left on, but other products may have different instructions.
Can Keratin Boost Serum be used on eyelash extensions?
No. The product information explicitly states that it should not be used on eyelash extensions as it may affect the adhesive.
Which is better: Keratin Boost Serum or 24k Essence?
They are not ranked as better or worse. Keratin Boost is formulated for Lash Lift and requires a 3–5 minute application time. 24k Essence is formulated for both Lash and Brow Lift and should be left on for at least 2 minutes. Choose according to your system and instructions.
Read more about Lash Lift
Professional guide for practitioners. Always follow the product's user manual, local hygiene requirements, and the treatment protocol associated with your training.
