Modern formulas vary—some reduce frizz temporarily while formaldehyde-free options offer smoother texture without harsh fumes.
Results depend on your natural texture, porosity, and aftercare sulphate-free shampoo extends longevity.
Keratin is not a straightening relaxer; expect softer, more manageable hair rather than pin-straight results on very coily hair.
Consult our colour specialists if you have recently lightened hair—timing matters for safe application.