Could you tell me what brand of melatonin drops you use? All I can find is one with flavoring in it. Is this what you have?
As for your question, rosemary is very good for rejuvenating skin and increasing circulation. Sage is another good one. Comfrey root is also very good at smoothing out mucous membranes and helping skin to regain elasticity.
Check out some of these herbs. Maybe you can find a natural product with these in a usable form. You could also use them in essential oil form.