Kimberley Medd, Clinic Lead at Face the Future, has revealed six habits that could be damaging your skin over the summer months. Heavy ingredients. Summer is when your skin is most likely to benefit from light, simple products. "One of the biggest mistakes people make during summer is continuing to use heavy moisturisers or skincare products formulated with occlusive ingredients," Kimberley says. "Whilst these ingredients may provide great hydration during colder months, they can trap sweat and sebum in the pores when temperatures rise, leading to clogged pores and dreaded breakouts"