If you compare ingredients in skincare, active ingredients are natural ingredients that have generally been formulated to deliver clinically studied benefits on specific concerns. They have a therapeutic effect, working on a cellular level to repair, protect and rejuvenate cells – eliciting real change on the surface. From vitamin c skincare ingredients to acids, ceramides and retinol (which is backed as one of the best anti ageing skincare ingredients by skin experts), choosing the right active ingredients and ingredients to avoid in skincare will depend on your skin’s sensitivities and concerns. As you begin to introduce new – particularly active – ingredients, start slow and monitor your skin’s reaction to avoid any adverse effects and ensure they’re healthy skincare ingredients for you.