I have been buying timeless products for over a year. I have bought vitamin C, co enzyme q10, matrixyl synth 6 and vitamin B5. I have very sensitive skin so stopped vitamin C on my face as it was to harsh. I have however started using it up on my hands and have found that it has significantly faded age spots. The three remaining products are all beneficial for my skin but due to financial constraints I have not purchased matrixyl synth 6 as it is present in the co enzyme q10 anyway. I love the most recent purchase B5 and believe it has been instrumental in my skin reacting well to vitamin A ie retin A and retinal Ie no down time such as flaking, redness and general irritation. I highly recommend these products