Here's a breakdown of key aspects:
* How it works: A chemical relaxer (typically containing ingredients like sodium hydroxide, calcium hydroxide, guanidine hydroxide, or ammonium thioglycolate) is applied to the hair. This chemical penetrates the hair shaft and alters its structure.
* Types of Relaxers:
* Lye Relaxers (Sodium Hydroxide): Considered the strongest and most effective relaxers. They can cause more scalp irritation if not applied carefully.
* No-Lye Relaxers (Calcium Hydroxide/Guanidine Hydroxide): Generally considered milder than lye relaxers, but they can lead to calcium buildup in the hair over time, making it dry and brittle. Guanidine hydroxide relaxers need to be mixed with an activator.
* Ammonium Thioglycolate Relaxers: Sometimes used for finer or more delicate hair.
* Application Process:
1. Base Application: A protective base (petroleum jelly or a special relaxer base) is applied to the scalp to protect it from chemical burns.
2. Relaxer Application: The relaxer is carefully applied to the hair, starting at the roots and working down the hair shaft, avoiding overlapping previously relaxed hair.
3. Smoothing: The relaxer is smoothed through the hair with the back of a comb or gloved fingers to ensure even distribution and straightening.
4. Rinsing: The relaxer is thoroughly rinsed out with water.
5. Neutralizing: A neutralizing shampoo is used to stop the relaxing process and restore the hair's pH balance. This is crucial.
6. Conditioning: A deep conditioner is applied to restore moisture and strengthen the hair.
* Potential Risks and Side Effects:
* Scalp Irritation and Burns: Relaxers can cause chemical burns on the scalp if not applied properly.
* Hair Damage: Over-processing can lead to breakage, split ends, and thinning.
* Dryness and Brittleness: Relaxed hair can become dry and brittle if not properly moisturized.
* Hair Loss: Severe damage can lead to hair loss.
* Changes in Hair Texture: Repeated relaxing can weaken hair and alter its texture over time.
* Important Considerations:
* Professional Application: It's generally recommended to have hair relaxed by a trained professional to minimize the risk of damage.
* Strand Test: Before relaxing the entire head, a strand test should be performed to determine the appropriate processing time and to assess how the hair will react to the chemicals.
* Proper Maintenance: Relaxed hair requires regular moisturizing, deep conditioning, and protein treatments to maintain its health.
* Avoid Overlapping: Overlapping relaxer on previously relaxed hair can lead to breakage. Only new growth (the roots) should be relaxed.
* Consider the Alternatives: There are alternatives to relaxing, such as heat styling (flat ironing), keratin treatments (which temporarily straighten hair), and embracing natural hair textures.
In summary, relaxing hair is a powerful chemical process that straightens curly hair, but it comes with risks. Proper application, maintenance, and understanding the potential side effects are crucial to minimizing damage and maintaining healthy hair.