It works on two levels:-preventative action: improves skin’s elasticity and helps improve its resistance to stretching caused by significant weight gain or pregnancy.-healing action: reduces the appearance of existing stretch marks, whether recent. stretch mark prevention and reduction cream-gel biovergetures is a non-greasy gel-cream that works to prevent the onset of stretch marks and visibly reduces the appearance of existing stretch marks.biovergetures stretch mark care is effective even on stretch marks acquired during adolescence. biovergetures leaves the skin fresh and smooth. it absorbs rapidly and does not stain.