My 14 year old son has had typical teenage acne for about 18 months. It's not terrible but a bit of a nuisance. This year, his hayfever has been quite bad and so he has been taking antihistamine tablets since April. I noticed within a week or so that his skin was looking significantly better and the improvement has continued to the point now that his skin is looking healthy and there is really no redness at all. Anybody had a similar experience?