3.Conclusion:Topical application of 15% Azelaic Acidcream combined with 0.025% Tretinoin cream is effective in treating facial post-burn hyperpigmentation.
9.Conclusion It have the high effective rate,simple easy use and no scar,if treating verruca plana with theVintamin-A acidcream combined with Ftibamzone cremer.
10.We use the method of ultra violent ray to measure the Salicylic Acid content of Compound Benzoic AcidCream directly. The wave length of ultra violent ray is 297±1nm. Average recycling rate is 100. 57% and RSD is 0.37(n=9).