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Hydroquinone

Hydroquinone was removed from all cosmetic products in 2020 after reclassifying it as a drug in the USA.


Whilst still available, it now requires a prescription.


HQ acts by blocking the action of tyrosinase and destroying the pigment cells (melanocytes).


It is usefully combined with other products and is essential to TCC.


HQ is very effective, but the reduction in pigmentation can take up to 4 months.


There are many other “over-the-counter” (OTC) or non-prescription alternatives to HQ.


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