Nubo Controlled Dynamic Retinol Boost Set Give your skin a boost with this advanced formula Retinol Boost set from Nubo. Offering you 3 strengths to pregressively restore retinol. Containing 3 advanceed treatment boosters that work to control Retinol delivery to penetrate skin on regular intervals without over facing your skin. By starting with 1 & progressing to 3 you can build on your skins Retinol levels to reep the anti-ageing benefits with increased cell turnover & collagen production. The Nu Bo Controlled Dynamic Retinol Boost Set: Dramatically reduces wrinkles. Increases elasticity. Remodels facial contour. Reduces age spots. Evens skin tone. Minimises pore size. Clears blackheads. Diminishes acne scars.