Allium Cepa Bulb Extract

Also-called-like-this: Onion Bulb Extract

You probably meet this guy more often in your kitchen than in the bathroom, but yes, onion extract is also used as a skincare ingredient. Its major -  but also doubted -  skin benefit seems to be that it can improve the cosmetic appearance of postsurgical scars (there is also a scar-fading gel called Mederma, that has hardly anything else in it but onion extract). 

According to manufacturer info onion is not only a scar healer, but it has also antibacterial and antifungal activity, it can help to reduce acne and stimulate hair growth