The concerns for exogenous ochronosis was expressed as well as the likelihood of irritation with higher percentage formulations of hydroquinone
However, when supplementation is discontinued: Melanin production may gradually return to normal levels
Even more intriguing is the presentation of right forelimb sparing and disability (reacting with only left or no forelimb upon challenge with forceps have difficulty with maintaining body balance while rearing), common in cuprizone rats, not presented in BPC 157-cuprizone rats (normal functioning of right forelimb, simultaneous reaction with both forelimbs, and grasp the forceps, and maintain body balance while rearing as healthy rats)
Specificity: Specific for free dityrosine, 3-(p-hydroxyphenyl) propionic acid dimer, dityrosine-BSA conjugate, and dityrosine in protein or peptides
If you are using it for spot treating an injury, keep the area clean and avoid using other harsh topicals on that specific spot