Why are tests done when you are going to relax hair?

Tests are done before relaxing hair to ensure that the hair and scalp are healthy enough to undergo the chemical process. This helps to prevent any potential damage or adverse reactions that could occur during the relaxing process. Testing can also help determine the appropriate strength and timing of the relaxer to achieve the desired results without causing harm to the hair or scalp.

Tests are done when going to relax hair to ensure that the chemical relaxer will not cause an adverse reaction on the scalp or hair. The test is usually done on a small area of the skin behind the ear or on the inner arm.

The potential adverse reactions include:

1. Allergic reaction: This is a rare but serious reaction that can cause swelling, itching, and difficulty breathing.
2. Scalp irritation: This is a common reaction that can cause redness, itching, and burning.
3. Hair damage: This can occur if the relaxer is left on the hair for too long or if it is not applied correctly.

The test is important because it can help to prevent these adverse reactions. If the test shows that you are allergic to the relaxer, you should not use it. If the test shows that you have scalp irritation, you may want to use a milder relaxer or apply it less often.