Frequently Asked Questions and Enquiries Is using SPF 20 day cream and SPF 20 foundation equivalent to SPF 40? The Sun Protection Factor (SPF) measures the amount of time sun damage is delayed for a certain product, and SPF is different for different products. The numbers cannot be simply added together. However, layering UV protection products rather than using just one will increase your protection factor. Layering sun protection cream and foundation is particularly effective. Frequently asked questions related to your question What is SPF? Search by Product Category Questions about skin care. Questions about base make-up. Questions about eye, lip and cheek make-up. Questions about sun protection. Other questions. Search by Question Questions about problems. Questions about safety. Questions about product usage directions. Questions about quality and storage. Questions about ingredients. Questions about labelling. Questions about containers and packaging. Questions about environment factors. Questions about product function. Other questions. Enquiries If you cannot find an answer here, you can make an enquiry by clicking the link below. Click here to make an enquiry on Facebook.