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10% – Refers to a concentration, possibly of an active ingredient like Niacinamide, Vitamin C, Glycolic Acid, etc.
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HA – Stands for Hyaluronic Acid, a common hydrating ingredient.
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30 ml – The volume of the product.
A complete interpretation could be:
A 30 ml skincare product containing 10% of an active ingredient (possibly something like Niacinamide or Glycolic Acid) and Hyaluronic Acid (HA) for hydration.
If you provide the full name of the product or active ingredient, I can give a more precise breakdown or usage tip
