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Not potent enough for me

I have a well-established skincare routine and the AHA product is one of my daily steps.
There are several AHA products with various concentrations that I use for different seasons and between seasons. For example, now is the time to use a little more concentrated AHA product because you need a booster to help accelerate shedding the sun-damaged skin (from the Summer) and get ready for the upcoming breezing, dry, and cold seasons.
Unfortunately, Sunday Riley Good Genes All-in-One Lactic Acid Treatment is not potent enough to do anything on my skin. I don't even think that this product is suitable for a routine AHA treatment.
To be honest, I don't know the concentration of the lactic acid in this product but I suspected it is less than 10%.
For women with aged skin, I think a product with a minimum of 20% AHA is necessary.

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