PH reactive lip balm creates your own personal tint based on your body chemistry. Moisturizing formula nourishes your lips and adds just the right amount of color for an enhanced but natural look. This super cute and star-shaped PH reactive lip balm comes in four vegan shades that shift on application to create a perfect, personalized tint based on your individual body chemistry. Not tested on animals and free from parabens, phthalates and the most prevalent formaldehyde donors.