So, from what I understand, our skin's pH level is slightly acidic - 5.5 to be exact. I'm sure most of you already knew that. I've heard conflicting things about a skin's pH level and the products - some say that our body will naturally bring our skin back to a healthy pH level, others say that you should use pH strips to test your products. What are your opinions? Do any of you use pH strips to test your products before putting them on your face?
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