We turned to Holly Sherrard of the International Dermal Institute
to answer this question. Here's what she had to say.
Stretch marks are caused from trauma underneath the surface of the skin so topical preparations usually don't have a huge impact on the appearance of them. However, if topical ingredients such as Vitamin E, C, A</b> and essential fatty acids are applied during the healing process or at first appearance of them, the ingredients can encourage healthier skin. Beta glucan is another ingredient which stimulates the body's natural immune system to possibly reduce the chances of the skin becoming damaged.