Skin sensitivities can be unpredictable. If you have experienced a reaction, we recommend you stop using all products for a full week. This will give your skin the chance to recover from whatever was aggravating it.You may wish to test the Kronokare products you have on separate patches of skin away from your face. Allow twenty-four hours to assess your skin's response. If the test result does not have an adverse reaction, you can apply freely. If your skin reacts or symptoms persist despite not using any products, we suggest you consult with a dermatologist.