What ingredient in relaxers requires a base cream on the scalp to prevent irritation?

Sodium hydroxide is a strong alkaline ingredient commonly found in chemical relaxers. It has the potential to cause significant irritation or burns to the scalp due to its high pH level, which can strip moisture and compromise the skin barrier. This irritation risk necessitates the application of a base cream on the scalp before the relaxer is applied. The base cream acts as a protective barrier, helping to shield the sensitive scalp from the harsh effects of sodium hydroxide during the relaxing process. By using base cream, hairstylists can promote a safer and more comfortable experience for clients.

Other relaxer ingredients, such as calcium hydroxide, ammonium thioglycolate, and potassium hydroxide, may have different applications or lower pH levels and may not require the same protective measures for scalp application. This reinforces the need for specific protective measures associated with sodium hydroxide in relaxers.