What is the purpose of a hair gloss?

A hair gloss primarily serves to enhance shine and improve the overall appearance of the hair. It is a semi-permanent treatment that helps to add a layer of shine, enrich color, and even out the hair's texture. By using a gloss, the hair can appear healthier and more vibrant.

The gloss typically contains nourishing ingredients that help condition the hair while also reflecting light, which contributes to a glossy finish. This is particularly beneficial for dull or faded hair, as it revitalizes the color without the more permanent effects of dye.

In contrast, the other options serve different purposes: lightening hair color involves chemical processes to alter the natural shade, removing product buildup requires cleansing agents that can strip the hair of oils and styling products, and chemically straightening the hair alters its structure to eliminate curls or waves. Each of these serves a distinct function, whereas the primary role of a hair gloss is focused on enhancing and beautifying the current color and texture of the hair.