The best anti aging product is most likely to contain ingredients that fight aging: Alpha-Hydroxy Acids (AHA), antioxidants, collagen and Vitamins C, D, E and K.

Beta-Hydroxy Salicylic Acid (BHA) or its alternative Alpha-Hydroxy Acids rids the skin of dead skin cells through exfoliation. The less dead skin cells are accumulated in pores, the fresher and cleaner and younger-looking your skin becomes. However, one must keep in mind that although these are widely used in anti aging products, some individuals experience irritation due to the ingredient's exfoliating abilty.

Other ingredients like antioxidants work more than just on the surface. The antioxidant Coenzyme Q10 encourages cell turnover by restoring and preventing damaged skin. This also gets rid of dead skin cells that cause discoloration.

Collagen has hydrating properties that moisturize the skin, protecting it from further damage. Collagen is known for plumping the skin and is widely used in lotions as well as in other treatments such as collagen injections.

Several of the anti aging products we have in the market these days already have added vitamins. These are Vitamins C, D, E and K which are important in preventing deficiencies, as well as in healing wounds, smoothing out scars and strengthening the immune system. Many of these vitamins are antioxidants which fight against free radicals in the body. These free radicals cause the skin to age.

There are some anti aging properties that claim to work but are actually questionable. For one, it is not yet scientifically proven that Vitamin C can penetrate the internal layers of the skin or that it has any function there. This could be the reason why creams that contain only Vitamin C as their main ingredient (Vitamin C creams) might not have any major effect on the skin when used as an anti aging cream.

It is by far antioxidants that make the best anti aging product work. It has been observed that a formula without these essential ingredients just wouldn't be effective. Free radicals are naturally produced in the body, but its release of unstable oxygen can damage healthy cells. As it has been observed, free radicals are the culprit when it comes to age-related problems. Antioxidants help keep free radicals at bay, thus delaying the aging process.

Other popular anti aging supplements such as estrogen, testosterone, progesterone, DHEA, thyroid and melatonin are also essential in an anti aging product. These are more commonly as hormone supplements that delay aging. These hormones are also known to increase libido, stabilize sleeping patterns, prevent cancer and help strengthen the immune system.

Human chorionic gonadotropin (hCG), oxytocin, erythropoietin (EPO) and insulin may also be effective to some degree and are used by fewer consumers. Human chorionic gonadotropin is responsible for fertility in humans; oxytocin supports the reproductive system; erythropoietin is known to treat anemia; insulin is used to treat diabetes mellitus type 1.

Supplements can have varying effects on different individuals. Therefore it is crucial to see a doctor before using anti aging products containing any of these.