No, there are no sun sensitivities with the PEPTI-correct Hp. Last Update: October 20, 2018 October 20, 2018 3128FAQ’sRelated Knowledge Base Posts -Will the PEPTI-nano mask work with LED because of the reflection and can LED penetrate through the mask?Is there hormone aspect to the peptide in PEPTI-correct HP?Besides PEPTI-correct Hp, what do you suggest for lightening of scar tissue on fair skinned people?