Melatonin, a natural hormone in our body, helps control sleep-wake cycles. It is being actively produced and released into the bloodstream around 9pm. This is the best time to clean your face and let your skin absorb topical treatments. Melatonin levels stay elevated throughout the night. As we sleep, skin renewal and repair processes kick in including enhanced cell turnover. Use ingredients at night that aid these processes, such as retinol, antioxidants, peptides, stem cells and hyaluronic acids. You can boost their effectiveness by getting sure to get a good night's sleep: keep the bedroom screen free (and thus banish blue light - best if done even two hours before bedtime), limit alcohol and have a glass of water before bedtime to help you stay hydrated, avoid hot baths and showers just before bed, and try an sleep on your back to avoid your pillow furrowing lines into your face. It is not called beauty sleep for nothing... 💤