Joico K-Pak Cuticle Sealer 1 Litre
Joico K-Pak Cuticle Sealer 1 Litre is a professional pH neutraliser and acidifier with a unique double-action formula that smooths and tightens the hair cuticle. It also helps preserve curl and color by reducing hair swelling caused by chemical treatments like tinting, lightening, straightening, and perming. Additionally, this sealer eliminates ammonia and peroxide residues and the unpleasant smell of perms. Its carefully balanced formula contains 19 essential amino acids, which quickly and effectively protect and reconstruct hair from the cuticle to the cortex.
Key Benefits
- Smooths and tightens the hair cuticle
- Preserves curl and color after chemical treatments
- Reduces hair swelling from tinting, lightening, straightening, and perming
- Eliminates ammonia and peroxide residues
- Removes unpleasant perm odors
- Contains 19 essential amino acids for cuticle and cortex protection
Product Specifications
| Item | Volume: 1 litre |
|---|---|
| Formula Type | pH neutraliser and acidifier |
| Key Ingredients | 19 essential amino acids |
| Use Case | After chemical treatments including tinting, lightening, straightening, perming |
FAQ
Can this product be used after hair coloring?
Yes, it is designed to be used after hair coloring to help preserve color and reduce swelling.
Does it help maintain curls after perming?
Yes, it helps preserve curl by reducing hair swelling and tightening the cuticle.
Is it safe for colored or chemically treated hair?
Yes, it is formulated to be safe and effective for colored and chemically treated hair.

Victoria Blake –
I used this after a perm and noticed my hair felt smoother and the curls stayed defined. The smell disappeared completely and my hair didn’t feel dry or brittle. It’s a must-have after chemical treatments.
Gavin Simpson –
After lightening my hair, I applied this sealer and saw less frizz and better color retention. The amino acids seem to help repair the cuticle. Works well and smells neutral.
Joan Robertson –
It seals the cuticle effectively and reduces the smell from perming. A little goes a long way. Not a miracle product, but it helps maintain hair health after chemical processes.
Claire Stewart –
Used it after a salon straightening treatment. My hair felt softer and didn’t feel damaged. The color stayed vibrant and the texture improved noticeably.
Harry Metcalfe –
Good product for post-treatment care. It reduces swelling and helps keep curls intact. A bit thick to apply, but effective when used properly.