For example, blisters appear on your feet during a long walk or on your hands if you have been working with garden tools for a long time.
If the horny layer - the top layer of your skin - has repeated contact with, for example, the inside of your shoe, the connection between the cell layers becomes deeper in the skin and moisture-filled cavities are formed.
Blisters are caused by friction
If something rubs against the skin again and again, blisters filled with moisture will eventually form.
1. Cuticle has multiple layers
The skin consists of three important layers: epidermis (upper), dermis (middle) and subcutis (lower). The epidermis is also again divided into layers, and the outermost one is the horny layer.
2. Friction causes cracks
If the horny layer rubs against a deeper layer for a longer period of time, microscopic damage will occur in the underlying layers.
3. Moisture flows into the cavity
Multiple damage together form one large cavity (green part in the middle) under the horn layer. This cavity is full of body fluid such as lymph fluid and serum and becomes a blister.
This way you avoid blisters
- Buy shoes that fit. Too large shoes increase the chance of friction, too small shoes pinch your feet. Remember that in warm weather your feet can set up with half a shoe size.
- Avoid creases in your socks that can create pressure.
- Take care of your feet: remove dead skin, file calluses and rub your feet with a greasy cream.
What should you do if you have a blister?
If the damage has already been done, it is important to treat the blister properly. A blister usually heals in one to three weeks. And in that time you can both alleviate and considerably aggravate the problem.
1. Only puncture a blister if you experience it
The moisture that accumulates in the blister helps the skin heal faster. That's why you should only puncture a blister if it is bothering you. Always use a sterile needle. Then gently squeeze out the moisture, stick a patch on the blister and leave the skin alone until it is healed.
2. NEVER cut the blister
If you cut off the dead epidermis, you will delay the healing process considerably. The epidermis works as a kind of dressing, so that the wound heals up to five times faster.
3. Protect the wound
To give the skin the opportunity to heal quietly, it is best to protect the area with a plaster or sports tape.