ammonium thioglycolate relaxers have a ph of

2 min read 06-02-2025

ammonium thioglycolate relaxers have a ph of

Ammonium thioglycolate relaxers are chemical hair straightening products used to permanently alter the hair's structure. A key factor in their effectiveness and potential for damage is their pH level. This article will explore the pH of ammonium thioglycolate relaxers and its significance.

The pH of Ammonium Thioglycolate Relaxers

Ammonium thioglycolate relaxers typically have a pH range of 9.0 to 9.5. This highly alkaline pH is crucial to their function. It's important to note that the exact pH can vary slightly depending on the specific brand and formulation.

Why is the pH Important?

The high alkalinity of ammonium thioglycolate relaxers is essential because it:

Breaks disulfide bonds: Hair's strength and structure depend on disulfide bonds, linking keratin proteins. The alkaline pH of the relaxer weakens these bonds, allowing the hair shaft to be reshaped.
Swells the hair shaft: The alkaline solution causes the hair cuticle to swell, making it more permeable to the ammonium thioglycolate. This penetration is necessary for the relaxer to reach and effectively break the disulfide bonds.

Understanding the Risks of High pH

While the high pH is necessary for effectiveness, it also presents risks:

Hair damage: Prolonged exposure to such a high pH can damage the hair's protein structure, leading to brittleness, breakage, and dryness. The hair's elasticity is reduced, making it more prone to damage.
Scalp irritation: The alkaline solution can irritate the scalp, causing burning, itching, or allergic reactions in sensitive individuals. Always perform a patch test before applying a relaxer to the entire scalp.
Chemical burns: Improper use or prolonged contact can lead to chemical burns on the scalp and skin.

Neutralization: Restoring the pH Balance

After the relaxing process, a neutralizer is applied to restore the hair's pH to a more balanced level (usually around 4.5–5.5). This crucial step:

Rebonds disulfide bonds: The neutralizer helps to reform some of the disulfide bonds, stabilizing the new straightened hair structure.
Reduces damage: It minimizes further damage by halting the action of the ammonium thioglycolate and reducing the alkalinity.

Choosing and Using Ammonium Thioglycolate Relaxers Safely

Selecting and using ammonium thioglycolate relaxers safely involves:

Following instructions carefully: Always adhere to the manufacturer's instructions precisely. This includes application time, processing time, and neutralization steps.
Using proper protective gear: Wear gloves and eye protection to prevent skin and eye irritation.
Performing a strand test: Test the relaxer on a small strand of hair before applying it to the entire head. This helps determine the processing time and check for any allergic reactions.
Consulting a professional: For best results and to minimize risks, consider having a professional stylist apply the relaxer.

Conclusion

Ammonium thioglycolate relaxers' high pH (9.0-9.5) is essential for their ability to straighten hair by breaking and reforming disulfide bonds. However, this high pH also presents risks of damage and irritation. Safe and effective use requires careful attention to instructions, appropriate protective gear, and possibly professional assistance. Understanding the pH and its implications is crucial for achieving safe and successful hair straightening.