how about biosil?
Yes, biosil is great for skin. Astaxanthin may be good, but consider lutein, either in addition or as an alternative. There is research that shows lutein helps skin and acts like a weak (but all-over, and presumably all-the-time) sunscreen. It's not very expensive, and the last time I looked, Swanson was practically giving it away.
Skin Pharmacol Physiol. 2007;20(4):199-210. Epub 2007 Apr 19.
Beneficial long-term effects of combined oral/topical antioxidant treatment with the carotenoids lutein and zeaxanthin on human skin: a double-blind, placebo-controlled study.
Palombo P, Fabrizi G, Ruocco V, Ruocco E, Fluhr J, Roberts R, Morganti P.
Department of Plastic, Reconstructive and Aesthetic Surgery, Saint Eugenio Hospital, Rome, Italy.
BACKGROUND: The skin is exposed to numerous environmental assaults that can lead to premature aging. Of these agents, perhaps none is more ubiquitous than the ultraviolet (UV) wavelengths of sunlight. The primary immediate defense against environmental skin damage is the antioxidant capacity of the skin. However, this defense system can be compromised by moderate exposure to UV light. Therefore, bolstering the antioxidant defense system of the skin is a potentially important strategy for reducing environmentally induced skin damage. AIM OF THE STUDY: This clinical trial was designed to study the efficacy of lutein and zeaxanthin, two potentially important antioxidants found naturally in the skin, upon five skin physiology parameters (surface lipids, hydration, photoprotective activity, skin elasticity and skin lipid peroxidation - malondialdehyde) of human subjects. These xanthophyllic carotenoids were administered either orally, topically, or in combination (both oral and topical routes). RESULTS: The results obtained indicate that the combined oral and topical administration of lutein and zeaxanthin provides the highest degree of antioxidant protection. However, oral and topical administration of these antioxidants individually also provides significant activity in the skin. In addition, oral administration of lutein may provide better protection than that afforded by topical application of this antioxidant when measured by changes in lipid peroxidation and photoprotective activity in the skin following UV light irradiation. Copyright 2007 S. Karger AG, Basel.
PMID: 17446716
Arch Dermatol Res. 2007 Oct;299(8):373-9. Epub 2007 Aug 21.
Regulation of the extracellular matrix remodeling by lutein in dermal fibroblasts, melanoma cells, and ultraviolet radiation exposed fibroblasts.
Philips N, Keller T, Hendrix C, Hamilton S, Arena R, Tuason M, Gonzalez S.
School of Science and Mathematics, Georgian Court University, Lakewood, NJ, USA. nphilips@fdu.edu
With aging and cancer there is increased expression or activity of matrix metalloproteinases (MMPs) that degrade and remodel the structural extracellular matrix (ECM). In addition, exposure of skin to ultraviolet (UV) radiation (photoaging) leads to loss of cell viability, membrane damage, and deposition of excessive elastotic material. Lutein has antioxidant, anti-inflammatory, photoprotective, and anti-carcinogenic properties. The goal of this research was to investigate lutein's anti-aging and anti-carcinogenic effects via the regulation of the extracellular matrix remodeling. To this purpose, the effects of lutein on the expression of MMPs and their inhibitors (TIMPs, tissue inhibitors of metalloproteinases) in dermal fibroblasts (intrinsic aging) and melanoma cells were examined. Further, for lutein's photoprotective effects, the regulation of cell viability, membrane integrity, and elastin expression in the non-irradiated, and UVA or UVB radiation exposed fibroblasts were analyzed. Lutein significantly inhibited MMP-1 expression, transcriptionally, and MMP-2 protein levels in dermal fibroblasts, without altering TIMPs expression. It significantly inhibited MMP-1 expression in melanoma cells while stimulating TIMP-2. Lutein did not alter fibroblast or melanoma cell viability or membrane integrity. In ultraviolet radiation exposed fibroblasts, lutein improved cell viability, membrane integrity and inhibited elastin expression, though more significantly in the UVB exposed fibroblasts. In summary, the mechanism to lutein's anti-aging and anti-carcinogenic effects include the inhibition of MMP to TIMP ratio in dermal fibroblasts and melanoma cells, and the inhibition of cell loss, membrane damage and elastin expression in ultraviolet radiation exposed fibroblasts.
PMID: 17710425
Skin Pharmacol Physiol. 2006;19(4):224-31. Epub 2006 May 4.
Antioxidant supplements improve parameters related to skin structure in humans.
Heinrich U, Tronnier H, Stahl W, Béjot M, Maurette JM.
Institute of Experimental Dermatology, University of Witten/Herdecke, Witten, Germany. ulrike.heinrich@uni-wh.de
In the present study we investigated the influence of two different antioxidant supplements composed of carotenoids, vitamin E and selenium on parameters related to skin health and skin aging. Thirty-nine volunteers with healthy, normal skin of skin type 2 were divided into 3 groups (n = 13) and supplemented for a period of 12 weeks. Group 1 received a mixture of lycopene (3 mg/day), lutein (3 mg/day), beta-carotene (4.8 mg/day), alpha-tocopherol (10 mg/day) and selenium (75 microg/day). Group 2 was supplemented with a mixture of lycopene (6 mg/day), beta-carotene (4.8 mg/day), alpha-tocopherol (10 mg/day) and selenium (75 microg/day). Group 3 was the placebo control. Upon supplementation serum levels of selected carotenoids increased in both verum groups. Skin density and thickness were determined by ultrasound measurements. A significant increase for both parameters was determined in the verum groups. Roughness, scaling, smoothness and wrinkling of the skin were determined by Surface Evaluation of Living Skin (Visioscan). Roughness and scaling were improved by the supplementation with antioxidant micronutrients. In the placebo group no changes were found for any of the parameters. Copyright © 2006 S. Karger AG, Basel.
PMID: 16679825
There was another favorable lutein paper that I saw a while back, but I can't find it now.