Revitol Stretch Mark Prevention cream’s squalene oil promotes healthy skin while the vitamin E and grapefruit seed extract act to strengthen the collagen and elastin found deep in the lower epidermis. By stimulating the production of your own body’s natural collagen your skin will become stronger and its natural elasticity will be increased. This will significantly aid in the prevention of dermal ruptures that eventually result in stretch marks. Vitamin D3 is a natural derivative of vitamin D produced by your own body when you expose your skin to the sun. However, for it to aid in the regeneration of the epidermal layer far more sunlight is required than our everyday modern life will allow, thus alternate sources of vitamin D3 become a necessity. The vitamin D3 in this product will complement the vitamins E and A in the stimulation of new dermal cell production.