You better not touch them- Touching them would only worsen your already bad condition as often our hands are dirty and we end up infecting our pores which worsens our already bad condition. You see the best advice would be to keep your hands off them.
Blackheads are formed on your skin when extra oil clogs up the pores which are close to the surface of your skin. This oil which has settled in the open pore gets exposed to oxygen in the air and forms a dark color blackhead.
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