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For dark spots on face following pimples ,the best remedy would be a chemical peeling(glycolic or salicylic acid
) .This you can get it from a experienced dermatologist
Apart from this the you should use tretinoin
cream locally at night only on the spots .This a type of wonder drug which works best in pigmentation .In morning it is mandatory to use a good spf sunscreen daily.
If you are still getting pimples the you can use clindamycin
cream over the pimples .But Clindamycin cream does not work on pigmentation .
If this doesn't solve your problem then you have to go for lasers .
As far as spots over arm pits and abdomen is concerned ,you can use hydroquinone
cream locally .You can use it along with tretnoin cream as well.
are of three types depending upon their color.
1) dark black - called stria nigra.
2) white - called stria alba.
3) red - called stria rubra.
Treatment, though very unsatisfactory ,depends upon which color stretch marks one has.
Black stretch can be improved by using certain creams containing either tretinoin or hydroquinone base.
Some doctors prefer doing derma roller also .But you should understand that results vary from patient to patient and one can never get 100% results.
For white stretch marks ,there are lasers like RELUME. These lasers actually give color to the white line .These are costly lasers and are not so easily available.
I've used this laser for many years ,but the results were variable. There are certain clients where in we see very satisfactory result and what laser does is ,it just makes your white stretch marks match your original skin color,so that it is less visible.
Its something like tanning
of skin .
You can check out this link to know more about lasers ..http://www.allaboutstretchmarks.com/ReLumetreatment.htm
Hope this would help you decide your treatment options.If you have any further query ,you can write back to us.