Magic Molecule

The "Magic Molecule Hydrochloric Acid Mist" seems to be a reference that might need clarification, as it’s likely you're referring to a product containing hypochlorous acid, a common skincare ingredient, rather than hydrochloric acid, which is a highly corrosive substance not suitable for skincare.
 
If you meant Hypochlorous Acid (HOCl) Mist, here’s some information:
 
Hypochlorous Acid in Skincare
What It Is: Hypochlorous acid is a naturally occurring molecule produced by white blood cells as part of the body’s immune response. It has antimicrobial and anti-inflammatory properties.
Benefits:
Gentle Cleansing: HOCl mist helps cleanse the skin by killing bacteria, making it particularly useful for acne-prone skin.
Anti-Inflammatory: It reduces redness and irritation, making it suitable for sensitive skin or post-procedure care.
Healing: HOCl supports the skin's natural healing processes, which is why it's often used in wound care and skin recovery treatments.
Versatile Use: Can be used as a toner, post-cleansing mist, or even throughout the day to refresh and protect the skin.
Usage
For Acne: Spritzing a hypochlorous acid mist can help reduce acne-causing bacteria and calm inflammation without over-drying the skin.
For Sensitive Skin: It’s ideal for those with sensitive skin who need a gentle yet effective product to maintain skin health.
If the product you're referring to actually uses hydrochloric acid, it's likely there was a mix-up in the naming or description, as that substance would be harmful to the skin.