Based on the provided reference, Alpha Hydroxy Acids (AHAs) like Lactic Acid and Glycolic Acid, and Synthetic Retinol are ingredients that can cause irritation when mixed with other skincare ingredients.
While the provided reference doesn't explicitly state these should not be mixed specifically with Hyaluronic Acid, it's important to be cautious when combining potentially irritating ingredients. It is therefore generally good practice to avoid or use with caution the ingredients below.
Here's a breakdown of why caution is advisable:
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AHAs (Alpha Hydroxy Acids): Examples include lactic acid and glycolic acid. They exfoliate the skin, which can increase sensitivity.
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Synthetic Retinol: A powerful ingredient for anti-aging, but can also cause dryness, redness, and peeling, especially when first introduced to the skin.
Potential issues with over-exfoliation or irritation:
Combining exfoliating acids (AHAs) with potentially irritating ingredients can lead to:
- Increased sensitivity: The skin barrier can be compromised.
- Redness and inflammation: Visible signs of irritation.
- Dryness and peeling: Resulting from excessive exfoliation.
It is always recommended to introduce new skincare ingredients gradually and to monitor your skin's reaction.
