First, I must confess that I earned a doctorate in organic chemistry in the late '80s. So, I come to these product reviews from a somewhat different perspective.
1) Antioxidants Concentrate ($55 in the shop): I used this product for about 2 months, beginning in mid November and used it on only 1/2 of my face so I would have a point of comparison. I first noted a very nice, almost spicy/earthy smell to this formula which seemed very nice. Upon application, it absorbed quickly into my skin. I layered it along with a vitamin C product and glycolic acid product as well as moisturizer and did this in the mornings only. During the two months I used this, I kept looking for some changes in my skin on the side where the YBF product was applied. However, even to this date, I still cannot see much - maybe a fine line smoothened. But, still not that much of a difference. It may well be that for the product to have its maximum effect, the period of use must be for 6 months or longer, which would give the skin cells at the upper most surfaces of the skin sufficient time to regenerate and for the human eye to see some more visible effects from the product.
2) Refresh eye cream ($80): Similar to the Antioxidants, I used this product for about 2 months, beginning in mid November and used it on only 1/2 of my face so I would have a point of comparison. This product had no detectable smell for me. It is a pale yellow cream. I applied this product in the mornings. I did not use any other eye area product during that time. I found that there were some absorption problems for me and this product seemed to sit on my skin and I had a very hard time getting the product to penetrate the dermis. Again with this product, I truly wanted to see some results but I still could not see much of a difference after 2 months of use. The skin under my left eye seemed to be firmer but I have no way of actually measuring that or if that was me thinking I was seeing some some result.
The main ingredient in the YBF line is a spin trap whose chemical name is phenyl butyl nitrone. Spin traps are purported to be super radical scavengers because of this "nitrone" moiety they possess. However, these species can be somewhat unstable and I am not sure of their shelf life and the effect of all of the other ingredients may have in the stability and other undesired chemical interactions involving these nitrones. I could not find any type of stabilizers mentioned in the product ingredients for these spin traps and in particular, phenyl butyl nitrone which is what is used in the YBF line of products. I could discuss further, but I think I may also solve some readers' insomnia problems in the process if I delve too deeply into the science behind this type of additive. Sweet dreams.
Ingredients in Refresh
Ingredients Reverse osmosis water, olivem (cetearyl olivate, sorbitan olivate), cucumber extract, Syn-Tacks (glycerin, palmitoyl dipeptide-5 diaminobutyroyl hydroxytheonine, palmitoyl dipeptide-5 diaminohydroxybutyrate), Syn-Coll (glycerin, palmitoyl tripeptide-5), caffeine, nutmeg butter, ppg5 ceteth-20, olive squalane, L-carnosine, nylon-12, vitamin e, c10-30 alkyl acrylate crosspolymer, ethylhexyl palmitate, vitamin B5, dimethyl isosorbide, alpha bisabolol, spin trap (phenyl butyl nitrone), tetrahydrocurcuminoids (turmeric root extract), idebenone,Lipochroman-6 (dimethylmethoxy chromanol), trans resveratrol, chrysin, sodium hyaluronate, violet leaf absolute, oakmoss absolute, triethanolamine, paraben du
Ingredients in Antioxidants
Reverse osmosis water, olivem (cetearyl olivate, sorbitan olivate), propylene glycol, ferulic acid, vitamin e, spin trap (phenyl butyl nitrone), Lipochroman-6 (dimethylmethoxy chromanol), sodium hyaluronate, paraben DU
Your Best Face Refresh and Antioxidants- reader reviewed
ProsContains spin trap as the main ingredient