Here are some natural suggestions for the prevention and treatment of blackheads...https://www.naturalnews.com/042368_blackhead_treatments_home_remedies_skin_care.html
About how the herb Thyme can be used as a treatment for acne...https://www.naturalnews.com/035869_acne_natural_cures_thyme.html
More about Thyme: https://www.natmedtalk.com/wiki/Thyme