Boots No7's new Prime Forever range promises plump and youthful skin, according to a study by Dr Mike Bell, Head of Science Research at No7. The study found that the thirties are a pivotal decade for skincare, shifting focus from healthy skin to concerns about early ageing. The range includes Radiance+ Vitamin C Daily Brightening Moisturiser and Cleansing Balm. The author tested these products for nearly four months to see how each individual's skin performed.