| Symphytum officinale. Extract from comfrey used in celltherapy treatments, face creams and suncare preparations as a healing agent and moisturizer. An antiinflammatory and antiirritant, allantoin is reported to promote skin cell regeneration. It can also be made from uric acid, but the comfrey root type is superior. The finest quality allantoin is free of pyrrolizidine alkaloids. |