What’s the difference between acid alkaline and exothermic perms?

What’s the difference between acid alkaline and exothermic perms?

Acid Perm vs. Alkaline Perm The main ingredient in an acid perm is glyceryl monothioglycolate. Since hair has a pH of around 5.0 acid waves are less damaging to the hair, require the heat of a dryer usually and typically do not produce as firm a curl as an alkaline wave.

What is alkaline perm?

Alkaline perms contain a low acidity, between 9.0 and 9.6 pH. Acid perms contain between 4.5 and 7.0. They are much more acidic and require additional heat in order to process.

How long does an acid perm last?

about six monthsBefore you leave the salon, be sure to get tips and product recommendations from your stylist. Advice for your particular hair and new style can save you a lot of time and money after the fact. Generally, perms tend to last about six months, and they're roughly as bad for your hair as coloring it would be.

Is hair perming lotion an acid?

Acid perm lotion is gentle with a pH value of approximately 6 to 7, similar to hair in its normal state.