― Firstly, I've only been using these just over a week so I'll do a proper review of the Super Serum in another week or so as this is the time scale in which it "boosts luminosity". ∙ Botanics is the result of Boots working with Kew Gardens in London. Boots and Kew have developed different ranges specific to skin care concerns. To find out more about the other ranges click HERE. Super Serum Radiant Youth is: ∙ "Scientifically proven to boost luminosity in 2 weeks. This serum reduces [...].