Impure blood causes such skin problem.
Need to know the lifestyle to find out the cause.
Next Steps
Avoid canned drinks alcohol smoking junks if you are consuming..
Have a early night dinner and early night sleep. Wake up at early morning. This maintains health generally.
Health Tips
Massage warm virgin olive oil or Almond oil just before bath. wash with warm water.
These are in general...For a specific cause and treatment need personal inspection.