Is skin care allowed?

Well,some types of make up or beautification is Haram since they are changing the creation of Allah such as removing eye brows etc. But if use cosmetics or skin care products to get clear skin and cure pimples,acne,freckles etc.and to make my skin soft without any intention to show myself to na mahram,is it allowed? Is it changing creation of Allah or just curing the defects like acne? What about doing excersise to be fit and loss weight? All these are halal?