Dermatology/sunscreens with soy oil
Hi, I was reading that the sunscreen I apply daily every 2 hours (ombrelle 60) contains soy oil. I don't understand, is this a good ingredient to have in a sunscreen? I thought that polyunsaturated fats oxidize in the sun, therefore creating free radicals?
Other than the internal benefits attributed to soy, recent research has shown that soy possesses antioxidant and anti-inflammatory effects on skin. The component in soy responsible for these effects are isoflavones, a class of plant compounds abundant in soybeans. In the skin, isoflavones have been shown to work in two important ways:
1. stimulate collagen Ė which helps to increase the skinís supporting structure, thereby increasing its thickness and elasticity
2. inhibit matrix metallo-proteinases, enzymes that break down the network of protein that make up the skinís support layer.
Of important note is that topically applied soy does not exert any hormonal effects.