After you apply the solution, you can reshape the hair on rods and rollers. Then, you can stop the curling action by neutralizing the solution. Acid wave solutions are better for treated hair, but are more likely to cause an allergic reaction. Some manufacturers advise women to do a patch test behind the 24 hours before using the solution to check for an allergic reaction.
Soft waves last only a few months but are best for fragile and double processed hair.
For that, many black women rely on hot combs, hot oil, and chemical relaxers. In the case of relaxers, experts recommend a patch and strand test. Done 24 hours before using the product, the patch test helps you check for darkening or irritation. The strand test lets you know how long the relaxer can be left on without damaging the hair. This information reviewed by Bayfront Medical Review Team .