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Cosmetics Formulation Development


สอบถามตัว vitamin c e ferulic lite ค่ะ

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Postby monkochawan9 » Sat May 15, 2021 11:30 pm

What is the approximate pH of this serum? and can then be used during the day to Antioxidant please?
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Re: question about vitamin ce ferulic lite

Postby staff » Fri May 21, 2021 12:00 am

Hello, the pH is about 3-3.5. It can be used at night. (and suitable for night use more than lunch)
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