Shampoos that are supposed to help hair grow - how long should they be left in before rinsing?
Some shampoos contain ingredients such as Biotin with the expectation that it will promote hair growth. Presumably the ingredient is in a format that can be taken up by the skin (or the hair follicles), or the shampoo contains some additional agent to support absorption.
With this question I am assuming that the absorption process would take some minimum amount of time (seconds or minutes), and that the shampoo would need stay on the scalp during that time in order for the ingredient to be absorbed.
However the labels on some of these shampoos do not provide any indication on how long the shampoo would need to stay on the scalp before rinsing it off.
The question I would like to ask:
Are there any guidelines how long this kind of shampoo should be left on the scalp before rinsing it off?
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Typically those kind of shampoos you need to leave on your scalp for about 10 minutes for maximum absorption.
However, if you are experiencing hair loss, there is a procedure that is done by dermatologists called PRP.
PRP or Platelet Rich Plasma is a procedure where a Dermatologist would draw about 100cc of blood from your arm, then run it through a centrifuge for about 15 minutes. The blood separates into 4 different levels. The Top layer is the Plasma, which is the layer that the dermatologist takes (About 50-70cc) and injects it back into the scalp, stimulating hair follicle growth. Many of my patients are very happy with the results, however the procedure is never covered by any insurance, and costs around 0. Worth it though. Also be ready for quite a bit of pain, since dermatologists use about a 27GA needle to inject your scalp.
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