Prep & Glow Kit from This Works. Take care of your feet and treat them to the ultimate at-home foot spa with these foot-nourishing products from This Works. The duo contains a highly moisturising foot balm to repair and restore dry and dehydrated feet whilst the Vitamin E based tinted serum works to provide an overall healthy glow. Featuring skin-loving extracts of Lemon, regenerating Ecocert Cotton Thistle and calming Lavender that work together to help rebuild, strengthen, and hydrate the skin barrier.