Harrison Li is a lifelong eczema researcher, nutritionist, and co-founder of WeDerm, a pharmacist and nutritionist-led health center for eczema using a multidisciplinary model that integrates medication, skincare, nutrition, probiotics, and lifestyle interventions, supported by gut microbiome qPCR and shotgun genomics. Harrison established the Hong Kong Eczema Association in 2023 to provide affordable healthcare access for underprivileged families, being the first recipient in Hong Kong to run an eczema service to promote community awareness on food allergy and eczema (SIE Fund). Harrison consults on eczema initiatives through Hong Kong Council of Social Service and Oxfam, is frequent speaker (100+) at District Health Centers, and hosts peer support groups for patients on biologics and JAK inhibitors. Harrison is published author of The Eczema Manual (2017), holds a BSc Nutrition and Master of Public Health from the University of Hong Kong, and has special interests on the gut-skin axis and microbiota-immune crosstalk.