I Mixed Crest 3D Toothpaste With Sensodyne True Whiting Toothpaste.

I mixed Crest 3D toothpaste with Sensodyne True Whiting toothpaste. It appears I have chemically burned my lips. The next morning lips sore crusty and every morning the same. My lips are extremely dry and always peeling and a rash has broken out around my mouth and on my face close to my mouth. This has gone on for two months. I plan to see a dermatologist.