I put tea tree oil on a pimple on my face and the next morning I woke up with a 10p sized red ring burn, what shall I put on it?

Tea tree oil. Tea tree oil has antifungal and antibacterial properties but undiluted tea tree oil may burn your skin. Tea tree oil should always be diluted with another oil (such as grapeseed) prior to application and should never be taken internally. Treat chemical burns with gentle cleansing and a hypoallergenic moisturizer. Aloe vera may help expedite the healing process, and relieve discomfort.