Base Vs No-Base Relaxers

When using sodium hydroxide, there are two types of formulas, base and no base. The base formula is a petroleum cream that is designed to protect the client's skin and scalp during the sodium hydroxide chemical straightening process.

This protective base also is important during a chemical straightening touch-up. It's applied to protect hair that has been previously straightened, to prevent over-processing and hair breakage.

Petroleum cream has a lighter consistency than petroleum jelly and is formulated to melt at body temperature.

The melting process ensures complete protective coverage of the scalp and other areas with a thin, oily coating. This helps to prevent burning and/or irritation of the scalp and skim.

Previously treated hair should be protected with a heavy moisturizing conditioner during the straightening process.

No base relaxers are also available. These relaxers have the same chemical reaction on the hair, although usually the reaction is milder.

The procedure for the application of a "no base" relaxer is the same as for a regular relaxer except that the base cream is not applied. It is advisable to use a protective cream around the hairline and over the ears.