There are many topical treatment which work but they won't ever get to the cause which is normally due to one of more of the following:
Digestive ane elimination
Blood sugar imbalance
On the topical level I recommend exfoliating once a week and also mixing one drop of pure tea tree oil in her moisturiser twice a day. This will quell the infection and prevent more outbreaks and she should start to see change in about a week. She needs to keep it up though.
But to get to the real cause I advise her to:
1) Balance her hormones by eating raw nuts and seeds, high fibre foods, vegetables pulses and oily fish
2) Support her digestion and elimination by increasing water and fibre
3)Takin cinnamon every day to balance blood sugar
4)Clean up her diet by avoiding sugar and saturated fat.
Seeing a nutritionist will help her get to really get to= the bottom of the problem and get specific herbs or vitamins to balance her hormones and assist digestive and liver function.
With very best wishes.
Head Nutritionist and Founderhttp://www.nutriheal.net
0207 474 6880