Types of hair relaxers

The most common relaxers targeted for Black hair come in two distinct formulations:

1. Lye relaxer (Sodium hydroxide relaxer):

• Contains sodium hydroxide, a powerful chemical known as an alkaline caustic.
• Percentage of sodium hydroxide will vary depending on the strength of the relaxing solution (mild, regular/normal or super/coarse), depending on the texture of the hair to be treated.
• The higher the pH levels, the stronger the chemical. Hair relaxers generally have pHs ranging from 10 to 14. The higher the pH, the faster your hair will straighten.

2. No Lye relaxer (Guanidine hydroxide relaxer):

• There is an absence of sodium hydroxide in the formulation. 
• No lye relaxers essentially works the same way, it takes two steps to create the proper formulation.
• The result is a slightly less damaging chemical than a traditional sodium hydroxide relaxer, as it has lower pH levels.

So, to lye or not to lye?

 Some believe the milder (No-Lye) formulas don't work as quickly or as effectively. Others prefer no-lye formulas because their scalp can't take the burning of the lye.

Relaxers are never supposed to touch the scalp but always do, and the longer it's on, the more chance for irritation; those with lye tend to burn more. When in doubt, check with your stylist.

 See our list of recommended products for relaxing Black hair at home.