he HD-SPREADMASTER is a robot which carries out the automatic spreading of the sunscreen on the substrate. It allows a total control of the product spreading and ensures the reproducibility of the In Vitro UV testing with a very low variability range.
First, 3 stages of distribution using small circular motions completed in < 30 s.
Second, 3 stages of rubs using alternating horizontal and vertical strokes completed in < 30 s.
The manual spreading with 8 different operators has been compared to the robotic spreading on 36 sunscreen products (including: O/W emulsions, W/O emulsions, oils, creams, lotions
and sprays) coming from different worldwide companies.