Anti-microbial action of dettol requires 20 minutes to stay in contact, which I think is impossible for any individual, so it is useless to use dettol.
Regarding side effects, it can produce eczema in sensitized person.
Dettol is not recommended for application over pile mass. Rather magnesium sulphate and glycerine paste is advised to reduce the edema and size of pile mass.
Detail can cause the skin to dry soon. Hence it is advisable to avoid using Dr. soap. You may use any soap rich in natural oils and moisture .Dead sea mud soap is a good option.
Having issues? Consult a doctor for medical advice