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GlossarySodium Hydroxide (Lye)

highly caustic compound used in hair relaxers and industry

Sodium Hydroxide, also known as NaOH or caustic soda, is a highly caustic and alkaline compound commonly used in various industrial processes, including soap making, paper manufacturing, and chemical synthesis. In the context of hair care, it is often found in hair relaxers, where it breaks down the protein structure of hair to make it straighter. However, due to its strong corrosive nature, it must be handled with care to avoid skin burns and other injuries.

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research Hair Straightening: Techniques, Chemicals, and Evolution

March 2010 in “Cosmetic Dermatology”

Hair straightening methods have advanced to improve effectiveness and reduce damage, but still rely on heat and chemicals.

research Protein Loss in Human Hair from Combination Straightening and Coloring Treatments

18 citations , July 2015 in “Journal of cosmetic dermatology”

Straightening and coloring hair, especially with sodium hydroxide, greatly increases protein loss.

research Ethnic Hair And Skin: What Is The State Of The Science?

2 citations , May 2002 in “Clinics in Dermatology”

Ethnic differences in hair and skin are significant and under-researched, requiring tailored dermatologic treatments and more study.

research Cuticular Damage to African-American Hair During Relaxer Treatments: A Microfluorometric and SEM Study

3 citations , May 2009 in “International Journal of Cosmetic Science”

Relaxer treatments damage African–American hair, with commercial products causing more harm than lab-made solutions.

research Influence of Chemical Straightening on the Stability of Drugs of Abuse in Hair

8 citations , October 2014 in “Journal of analytical toxicology.”

Chemical hair straightening significantly reduces detectable drug levels in hair.

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community Have been using topical minoxidil for about 3-4 years now, and it suddenly stopped working. I am now adding tretinoin to the schedule. Anyone experienced this?

in Minoxidil 1 year ago

Minoxidil stopped working for OP after 3-4 years, leading them to add tretinoin to their routine. Users suggest trying finasteride for long-term results, despite concerns about side effects.