Hi Rima,
I’m really sorry to hear about the negative response after using the Biolumin-C Vitamin C Serum. That’s not what we want for you.
Please stop using the product and rinse with water. We’d like to help resolve this quickly. Could you reply with your order number and, if possible, a few photos of the affected areas? You can also contact ecomcustomerservice@dermalogica.com and we’ll assist right away.