Don't over do it Wash twice a day with gentle use of the fingertips, don’t scrub too hard, spots are not caused by dirt. Watch what you put on your hair Hairsprays, gels and defrizzing agents tend to cause outbreaks of blackheads along the hairline. Watch what you put on your skin If you wear cosmetics it is best to choose a ‘non-comedogenic’ variety- this means it will not block your pores. It is also important to remember to remove your make-up thoroughly.