My promise to you last week (when putting together the Five Best antiaging serums I could find) was that I would coral the Five Best for under $50. This turned out to be a gratifying exercise. We have tested more good products under $50 than I would have suspected. I should even say that close runners up are worth a mention: Reviva’s TGF-1 and the Alpha Lipoic Acid and Nutra-Lift’s Rejuvenating A.

Cosmetic Skin Solutions C+E Ferulic Serum ($39.95). Thanks to Marsha, we learned about Cosmetic Skin Solutions C + E Ferulic Serum. It costs $100 less than an extremely similar and well known potion called Skinceuticals C+E Ferulic. Another member of the TIA community, Elyse, points out that the vitamin C in the CSS version is a vitamin C derivative called magnesium ascorbyl phosphate (MAP). Assuming that Skinceuticals uses the more expensive L-ascorbic acid, it still doesn’t justify the price difference. Marsha claims to be very happy with the results she is getting from CSS. Certainly, the combination ferulic and vitamins C and E are worth checking out. Duke University researchers blended ferulic with vitamin C and E and proclaimed it a "potent ubiquitous plant anti-oxidant". In fact, it was discovered to act synergistically with other antioxidants and, in this case, rendered the vitamins C and E more powerful. The Duke Study found it particularly good for preventing sun damage, and studies elsewhere have demonstrated that exposure to ultraviolet light actually increases the antioxidant power of ferulic acid.

Ole Henriksen’s Truth Serum ($48). Shyema and, it seems, most of her best friends love the amber colored Truth Serum. It has recently been reformulated and is now paraben-free. It still contains such brighteners as grapefruit and orange extract (which contributes to how great it smells). Antioxidants like green tea, and a powerful vitamin C derivative (sodium ascorbyl phosphate) help fight free-radical damage, which another vitamin C salt in the form of calcium ascorbate helps boost collagen production. The serum also contains hydrating sodium hyaluronate, which penetrates the skin to promote nutrient absorption for softer, fuller skin. And you gotta love the name!

NCN Professional Skincare 20% Matrixyl 3000 Serum ($38). In my experience, this serum with a hefty dose of the power peptide Matrixyl 3000 takes at least three weeks for its effects to be visible. Once it kicked in though, I had saw smoother skin that was a little plumper. Best of all, the skin where I tested it seemed firmer. Made by a small company that tries to keep its prices keen, this is very good value.

Your Best Face Concentrate Antioxidants ($48 in the TIA shop - update, 2011, the price of this has now increased to $55). YBF made this potion exclusively for Truth In Aging readers because we asked for something that would give us a base from which we could make our own serums – whether to keep the cost of our beauty habit down or unleash our inner formulator. It’s a great way to get a relatively inexpensive taste of the expensive antioxidants that are YBF’s trade mark – spin trap and Lipochroman-6. Use Concentrate on its own, with an  LED light device, mashed with fresh fruit as a mask, or mix it as a turbo charge for that leftover cream in your bathroom that didn’t do what you’d hoped but you can’t bring yourself to throw away before its empty.

Osmosis Replenish. This is one helluva skin smoother and it was one of Truth In Aging's Best Beauty Products of 2009. It has it all. A concise ingredient list with only hardworking actives. Nothing at all from the TIA nasty list. And the price to quality ratio is fantastic. It is powerful enough to make its mark on full-blown wrinkles as well as fine lines. It works incredibly well in conjuction with LED treatment (such as the Baby Quasar) and is a great team player. A damn good serum at any price.

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Ingredients in Osmosis Replenish

Purified water, phosphatidycholine, ethyl, niacinamide, glycerin, catalase, superoxide dismutase, L-glutathione, ferulic acid, CoQ10, tetrahydrocurcuminoids, spin trap, R-lipoic acid, astaxanthin, chlorella, trans resveratrol, GHK copper peptide, grape seed extract, curcumin, green tea extract, ginkgo biloba, essential oil blend

Ingredients in CSS

Water, Ethoxydiglycol, L-Asorbic Acid, Propylene Glycol, Glycerin, Laureth-23, Alpha Tocopherol, Phenoxyethanol, Triethanolamine, Ferulic Acid, Panthenol, Sodium Hyaluronate.

Ingredients in Ole

Water (Aqua), Sodium Ascorbyl Phosphate, Calcium Acerbate, Sorbitol, Glycerin, Tocopheryl Acetate, Aloe Barbadensis Leaf Juice, Citrus Aurantium Dulcis (Orange) Fruit Extract, Camellia Sinensis Leaf Extract, Euphrasis Offinalis Extract, Rosa Canina Fruit Extract, Citrus Grandis (Grapefruit) Seed Extract, Oleth-20, Hydroxyethylcellulose, PEG-12 Dimethicone, Benzophenone-4, Sodium Hyaluronate, Thioctic Acid, Phenoxyethanol, Citric Acid, Caprylyl Glycol, Hexylene Glycol, Limonene, Linalool, Citral, Fragrance (Parfum), Yellow 6 (CI 15985).

Ingredients in NCN

De-Ionized Water, Aloe Leaf Gel, Vegetable Glycerine, Palmitoyl Tetrapeptide-7, Palmitoyl Oligopeptide, Cucumber Fruit Extract, Chrysin, Hydroxy- succinimide, Palmitoyl Pentapeptide-4, Steareth-20, Polysorbate- 20, Carbomer, Diazolidinyl Urea, EDTA

Ingredients in YBF Concentrate

Reverse osmosis water, triglyceride, ppg5 ceteth-20, vitamin E, spin trap (phenyl butyl nitrone), C10-30 alkyl acrylate, crosspolymer, Lipochroman-6, triethanalomine.