Not sure why this product has received lots of negative reviews but I’m having a a great experience using it .
You can tell the quality of the product by how potent it is .
It did not however irritate my skin .
It is a strong vitamin c . But when it comes to such , I prefer a overall good product that actually will work .
I have dry mature skin and I have noticed brighten after 10 days of morning use .
Overall highly recommend.