RAW - looking for models with skin conditions

I am working on a personal project championing real skin. I got bored of clients saying the want to show real skin when all they mean it an occasional spot. I want to show actual real skin, acne, eczema, psoriasis... and show it in a beautiful way. I am looking for people with skin conditions to photograph. This would be in my home studio in SE London and I would just need you for an hour or two. I am afraid as this is a personal project I can not afford to pay, but you will have the images for your portfolio, and hopefully be a part of a project that can help to bring about some change in the industry.