Two separate vials win wherever the ratio has to be varied, wherever an observation needs attributing to one mechanism rather than the pair, or wherever one component is required without the other
And how could a tiny patch or two or six, covering a minuscule amount of skin, manage to reflect back so much energy as to cause body-wide improvements
Recently, partially influenced by social media, topical glutathione has been incorporated into a wide range of skin brightening and lightening product including under eye creams, face masks, eye masks, sunscreens, and moisturizers
10.1038/nrn3257 90 ShaoJ.WeiY.WeiX
A medication that is pharmacologically appropriate may still fail clinically if it increases reactivity