In a small but thorough study of mine (N=1) results are so far negative. If anything the subject gets balder over time despite exposure to McDonald’s fries.
https://www.amazon.com/MicroLubrol-Silicone-Polydimethylsilo...
"Skin PDMS is used variously in the cosmetic and consumer product industry as well. For example, PDMS can be used in the treatment of head lice on the scalp[19] and dimethicone is used widely in skin-moisturizing lotions where it is listed as an active ingredient whose purpose is "skin protection." Some cosmetic formulations use dimethicone and related siloxane polymers in concentrations of use up to 15%. The Cosmetic Ingredient Review's (CIR) Expert Panel, has concluded that dimethicone and related polymers are "safe as used in cosmetic formulations."[20]"