Just when you think you’ve got a handle on all the newest in skin care technology, Avon comes out with its new Reversalist line ($42.95 Amazon.com, $76.00 retail) featuring activin-stimulating molecules.  According to research published in Nature, the inhibition of activin in skin cells called keratinocytes leads to impaired collagen production and healing, whereas increased stimulation of activin production over basal levels lead to hyperthickening of the epidermis.  Clearly, then, activin plays a key role in the growth and... read more