increasing the dose to 1 mg/kg/day resulted in decreased skin cancer frequency in three of the four subjects who did not respond at the lower dose.[258] Oral isotretinoin use may be useful as a chemopreventive agent in other hereditary skin cancer syndromes, including basal cell nevus syndrome (BCNS), Rombo syndrome, EB, and epidermodysplasia verruciformis.[259,260] Level of evidence (oral isotretinoin for XP): 3aii Level of evidence (oral isotretinoin for BCNS, Rombo syndrome, epidermodysplasia verruciformis): 5 Topical T4N5 liposome lotion, containing the bacterial enzyme T4 endonuclease V, was also investigated as a chemopreventive agent in a randomized, placebo-controlled trial of 30 XP patients.[261] Although no effect was seen on incidence of SCC, 17.7 fewer actinic keratoses per year were seen in the treatment group

One honesty note worth keeping in mind: the published research comes from the company that manufactures the ingredient so independent data would strengthen the picture
All three are 99% purity, Janoshik-verified, mass-spec identity, 100% synthetic
In fact, animal models of SARS have been developed to recapitulate these findings
Dioscorea esculenta L
Kisspeptin-10 (10mg) $63.00 Sale