Silicon Serum is a complete hardening and protective treatment that prevents nail loss and limits the appearance of brown, black, bluish or yellow spots. It also combats ridged nails. It is composed solely of silicon, vitamin B12, and organic castor oil. This unique formula penetrates the nail and its contour. It provides a quick and effective solution to repair, protect, and soothe damaged nails and skin weakened by anticancer treatments. Its composition has been rigorously formulated from 100% natural and organic ingredients and without any trace of endocrine disruptors. Serum approved by endocrinologists, ingredients rigorously selected according to cancer treatments. Results are quickly visible, with long, healthy, smooth, and shiny nails and soothed cuticles. It can be applied over nail polish, before, during, and after treatments. Clinical Study Results: Fights duplication for 92% of patients. Prevents nail loss in 86% of patients. Nails repaired in 91% of patients. Soothes cuticles in 89% of patients. Does not leave a greasy film on 85% of patients. Pleasant to apply for 98% of patients. Multicenter study conducted on 70 patients undergoing anticancer treatments at the nail clinic.