Developer Volume (Peroxide)

Category: lifestyle

The concentration of hydrogen peroxide used to activate permanent hair dye or powder lightener.

Categorized by volume (10, 20, 30, 40), developer opens the hair cuticle and breaks down the natural melanin cells. Higher volumes (like 30 or 40 Vol) provide aggressive lifting power but introduce significant structural risk if left on the hair too long.

Common Examples

• The colorist mixed a gentle 10-volume developer with the gloss to ensure they only deposited tone without altering the natural roots.
• Using a 40-volume developer on fragile or compromised hair shafts can dissolve the internal protein bonds completely, causing hair breakage.