The serum is a product that made me interested the most because it has a lovely texture - it's a texture I can fall for - a lightweight gel which literally melts on your skin and absorbs quickly. It doesn't leave your face sticky and that's what matters the most at least for me. The formula - I can't deny I've got mixed feelings about it even if I can see here Niacinamide or Adenosine. There's also Panthenol - a provitamin B5, it has quite a huge meaning for the skin moisture. Allantoin is a soothing ingredient and Sodium Hyaluronate is an ingredient which I feel like I don't have to introduce since it's the most wanted humectant in a skincare product. There are also lots of peptides but we can find in this formula colourants and fragrance. I didn't have any allergic reaction even if I was expecting that I might get one but I've got a huge problem with this product that is mostly related with my personal scent preferences - I like when the product has a nice scent but this product is heavily scented for me - the scent is creamy but on the other hand it reminds me of a lavender and that's a scent which I'm not a fan of. So is it worth a purchase? It's up to you, it's a lightweight serum for dry and combo skin and people that want to prevent skin from dehydration and loss of skin elasticity, but you need to have in mind that some people might not like the scent. Plus points if you look for a product that looks fancy because this one really does look fancy and expensive (+ peptides do it's job too).