Texas Cosmetology Operator Written ExamHair Care ServicesMedium
A client is concerned about hair breakage during a chemical relaxer service. To minimize damage, which type of relaxer is generally considered the mildest and most gentle on the hair?
- AHydroxide relaxer
- BLye relaxer
- CNo-lye relaxer
- DThio relaxer
Show answer & explanationAnswer & explanation
Correct answer: C. No-lye relaxer
No-lye relaxers, which often contain guanidine hydroxide, are typically considered gentler than lye relaxers (sodium hydroxide) and are less irritating to the scalp, making them suitable for sensitive scalps or clients concerned about breakage.
Why the other options are wrong
- A. Hydroxide relaxers is a broad category, but specifically 'no-lye' hydroxide relaxers are the milder option compared to 'lye' (sodium hydroxide) hydroxide relaxers.
- B. Lye relaxers (sodium hydroxide) are very strong and can be harsh on the hair and scalp if not applied correctly.
- D. Thio relaxers (ammonium thioglycolate) are used for permanent waving and some straightening, but operate differently than hydroxide relaxers and require neutralization.
No-Lye Relaxers
Chemical relaxers formulated with ingredients like guanidine hydroxide, which are generally milder and less irritating to the scalp than traditional lye (sodium hydroxide) relaxers.
- Contain guanidine hydroxide
- Milder than lye relaxers
- Less scalp irritation
- Good for sensitive scalps
Memory trick: No-Lye means 'No' harshness.