The term "gloss bar" can refer to a cosmetic product or a hair care product. In the context of cosmetics, a gloss bar is a type of lip product that provides a natural, sheer color with a high shine glossy finish. For example, the Tony Moly Petit Bunny Gloss Bars are long-lasting and moisturizing, with different fruity scents and shades. They contain key ingredients such as cranberry extract, strawberry extract, raspberry extract, and blueberry extract, which are rich in antioxidants, vitamins, and fruit acids that help nourish, soften, and moisturize the lips
. On the other hand, in the context of hair care, a gloss bar is a deep conditioner infused with ingredients such as honey or rhassoul clay to draw in moisture, increase shine, and moisturize the hair strands
. The specific details, positive and negative aspects, and ingredients or materials of gloss bars may vary depending on the brand and type of product.