They are 'blind pimples' because they have no head.
More painful and larger than your average pimple because the inflammation is so deep within the skin, closer to the nerves.
When treating a blind pimple, there are 2 stages to know about:
1) The early stage - developing as a red, sore lump deep in the skin - the best time to treat it!
2) The later stage - if it's forming a head, the aim is to draw it to a head and treat it on the surface
- Trying to squeeze one will result in a big, painful mess
- Drying one out will simply dry out the surrounding skin and cause irritation
It will usually make it's way to the surface of the skin and eventually and form a head, where it then behaves like a normal whitehead.
The best treatment for a blind pimple will depend on the stage you've found it at.
Let's get to it...
First, a deep red spot develops, usually painful and you just know something is brewing beneath your skin.
If this is the stage you've noticed it, there's a good chance you can stop it in it's tracks, reducing it's intensity or making it disappear altogether.30% Off Product Launch & Give Aways - Sign Up Here!
*UPDATE* Using a daily exfoliator such as salicylic acid helps significantly with preventing deep pimples. If this is a common struggle for you learn more on this page about the benefits of using one.
It's still deep, red and painful, but it's further along and starting to develop a whitehead.
The only way is up from now on, so draw it to the surface and treat it there:
Once it's drawn to a head, use your better judgement for the best treatment. Often they are still too tender and inflamed to be squeezed at this stage.