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The main active ingredient is called Argireline. It’s a synthetic peptide also referred to as Acetyl hexapeptide-8. It is actually a commonly used peptide in many skincare products, so it’s nothing inherently new. What do I think of Argireline in general? Well, in my opinion Argireline is a good anti-ageing ingredient with clinical studies behind it.
HOWEVER (and this is a big however!!), the instantly visible effect in all those videos can’t possibly be down to the ingredient Argireline. Argireline’s mechanism of action (I tell you more about that in a minute) would not support such an instant action in my professional opinion.