Supplier of: skin actives, cosmetic ingredients, cosmeceuticals, active ingredients, and skin care ingredients, for DIY skin care and cosmetics, and homemade skin care products.
I wished i could order this in a smaller amount of 50 gr. Can i get informed when it is available ? -------------------- A. It will not be sold in smaller amounts. The review rating is meant to be for the product, not the size in which it is sold :-(.. ...»
Excellent quality, very fine texture and disperses easily when used correctly. Arrived in just seven days to London, England and with a reasonable postage fee. Very pleased... ...»
D N Bay
The best, most potent and most stable form of Vitamin C. Makes quite a difference to the appearance of mature, photo-damaged skin - don't expect results over night but with consistent use your skin will look more even and radiant!.. ...»
This ingredient has done more for my skin than anything else I've ever used. I put it into a spray facial toner and use it morning and night. I noticed the effects immediately, they were that dramatic. I will use this forever, no question... ...»
This product is amazing! I'm new to diy moisturizing cream and I've done quite a bit of research. However, I found info. at BulkActives that I have not seen anywhere else, especially with the hyaluronic acid. This product is of high quality, my friend is a chemist and he ran some tests, very high quality. It has done wonders for my skin, not only in the way it looks more healthy but it just feels so smooth and hydrated. I'm still experimenting with some recipes so I will return. Your service is .. ...»
Karen S.
I bought this product before and I am here to buy it again! A high quality product for really good price... .. Thanks!.. ...»
As all products from bulkactives, this is a really great and high-quality DYI ingredient. Along with John's friendly, reliable and very efficient service, it makes a purchase from bulkactives a very pleasant experience... ...»
I've been using Bulkactives green tea EGCG for four years. No complaints, it blends nicely my DIY anti-aging cream. I can feel a bit of toning and definitely notice the anti-inflammatory effects on my skin. Two observations that keep the rating 4 stars instead of 5: (1) A package of green tea contains significantly less weight/volume than the package of grape seed extract that I order from bulkactives. The two are combined in equal amounts in the anti-aging cream, so I find myself running o.. ...»
Theresa Andrews
I mixed it with some other water actives like Glucosamine, Niacinamide, Glutathione etc into the Pre Liposome Microemulsion and the serum was very smooth and moisturizing. As it claims, it penetrates into the skin very well. I will mix it with oil soluble actives in my next batch. .. ...»
Awesome Product and thanks for such a nice Product description .. ...»
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Buy Soy Isoflavones For Skin Care

Soy isoflavones are comparatively new in regards to cosmetic use, however, studies show they have multiple skin-benefitting properties.Isoflavones are structurally similar to estrogens and can activate estrogen signaling pathways, including collagen synthesis, to improve skin elasticity, reduce the appearance of fine lines and wrinkles, and increase tissue hydration.Additionally isoflavones are powerful antioxidants that can halt and reverse the appearance of aging due to free radicals caused by sunlight and other environmental hazards.As such, soy isoflavones are useful in reducing redness of the skin and decreasing the appearance of dark spots.These properties make soy isoflavones ideal for use in anti-aging, moisturizing, and skin protecting creams.

Key benefits of Soy isoflavones on skin care:

  • Anti-inflammatory [6, 11, 12]
  • Antioxidant [3, 6]
  • Increase skin elasticity [1, 4, 5, 15]
  • Matrix metalloproteinase [MMP] inhibitors [9]
  • Moisturizing and hydration [5, 15]
  • Natural phytoestrogens [3, 15]
  • Reduce fine lines and wrinkles [1, 4, 5, 15]
  • Stimulate collagen production [1, 4, 5, 15]
  • Sun damage protection [3, 6, 11, 12, 14]
  • Sun damage repair [3, 6, 11, 12, 14]
  • Treat hyperpigmentation [3]
Soy Isoflavones skin care active ingredients
Product Code: BulkActives
Reward Points: 5
Assay: Total Isoflavones 40%
CAS#: 574-12-9
Net weight: 30g /1.06oz
Availability: In Stock
Price: $12.50
Reward Points: 485

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Soy Isoflavones

Soy Isoflavones skin careAbout Soy Isoflavones in DIY Skin Care

Aging in post-menopausal women is closely associated with decreased levels of hormones including the female sex hormone estrogen.  Studies of these women indicate that the decrease in estrogen is associated with changes in the skin such as dryness, dermal atrophy, reduced mechanical tension, and the increased appearance of fine lines and wrinkles due to a decline in dermal collagen content [1].  Such changes in the skin are potentiated by photoaging, which results from UV-induced oxidation in the skin.  Damage from UV irradiation can also cause increased expression of matrix metalloproteinases [MMPs] in the skin, including MMP-1, MMP-2, MMP-3, and MMP-9  [2].  These proteinases degrade the collagen network in the skin and thus contribute to the aged appearance. 

Soy isoflavones are phytoestrogens, or plant-derived estrogens, which can bind to estrogen receptors and initiate signaling pathways related to maintaining dermal integrity.  Particularly of interest, soy isoflavones can elicit such responses in the skin but do not increase the risk of uterine or breast cancers unlike most other estrogen replacement therapies [3].  Independently of their estrogen receptor-binding abilities, soy isoflavones are powerful antioxidants capable of neutralizing and reversing photoaging effects [3].

The binding of estrogen to its receptors activates a variety of genes including those involving collagen production.  A clinical study testing isoflavones to reverse the signs of post-menopausal skin aging found that after treatment with an isoflavone-containing cream twice daily for twelve weeks participants had improved skin dryness and roughness by 32.9% and 22%, respectively, compared to untreated skin.  Wrinkles and skin looseness were also significantly reduced by 22% and 24%, respectively [4].   A similar study testing topically applied isoflavones demonstrated a 7.5% increase in the number of collagen fibers after treatment for six months [5].  Additionally, because collagen is capable of binding large amounts of water, it has been suggested that an indirect effect of isoflavone creams is increased hydration of the skin.  This therefore also makes them useful in moisturizing creams.

The skin is highly susceptible to free radical attack caused by environmental elements such as sunlight, cigarette smoke, and pollution, all of which contribute to premature aging of the skin.  Such environmental hazards can increase the rate of collagen degradation in skin, cause dermal inflammation, and lead to pigment abnormalities [3].  The antioxidant properties of isoflavones halt and reverse these effects by neutralizing free radicals.  Studies have demonstrated that isoflavones can impair the formation of free radicals and block oxidative stress-induced apoptosis of epidermal cells [6].  Because free radicals drive melanogenesis, or the hyperpigmentation, in fibroblasts, the antioxidant properties of soy isoflavones are also believed to be able to decrease the appearance of dark spots and even out skin tone [7, 8].

Isoflavones are also known to inhibit tyrosine kinases by competing for the ATP-binding site.  Through this mechanism, isoflavones can decrease MMP levels in the skin while increasing the levels of the body’s natural MMP inhibitors [9, 10].  In human epidermal cell cultures, isoflavones effectively inhibited UV-stimulated tyrosine kinases involved with initiation of inflammation [11, 12].  Thus, isoflavones have the capability to protect the integrity of the dermal matrix and to prevent UV-induced damage to the skin.

Interestingly, because dysregulation of tyrosine kinases and free radicals are each associated with driving carcinogenesis, soy isoflavones have been investigated for use in preventing or slowing skin cancer progression.  Several studies have successfully demonstrated that treatment with isoflavones can reduce the number of skin tumors and slow the rate of growth of skin cancer [13, 14].
CAS#: 574-12-9
INCI: Soy Isoflavones
Botanical Source: Soybean
Appearance: powder
Solubility: water, non-denatured ethanol
Suggested percentage: 3% to 5%

Storage: Store in cool and dry place. Keep away from direct strong light and heat.
Country of origin: China
[1]          Brincat M, Moniz C, Studd J, Darby A, Magos A, Emburey G, et al. Long‐term effects of the menopause and sex hormones on skin thickness. BJOG: An International Journal of Obstetrics & Gynaecology. 1985;92[3]:256-9.
[2]          Fisher GJ, Datta SC, Talwar HS, Wang Z-Q, Varani J, Kang S, et al. Molecular basis of sun-induced premature skin ageing and retinoid antagonism. 1996.
[3]          Pinnell SR. Cutaneous photodamage, oxidative stress, and topical antioxidant protection. Journal of the American Academy of Dermatology. 2003;48[1]:1-22.
[4]          Sator P-G, Schmidt JB, Rabe T, Zouboulis CC. Skin aging and sex hormones in women – clinical perspectives for intervention by hormone replacement therapy. Experimental Dermatology. 2004;13:36-40.
[5]          Accorsi-Neto A, Haidar M, Simões R, Simões M, Soares-Jr J, Baracat E. Effects of isoflavones on the skin of postmenopausal women: a pilot study. Clinics. 2009;64[6]:505-10.
[6]          Chan W-H, Yu J-S. Inhibition of UV irradiation-induced oxidative stress and apoptotic biochemical changes in human epidermal carcinoma A 431 cells by genistein. Journal of cellular biochemistry. 2000;78[1]:73-84.
[7]          Pawelek J, Chakraborty A. The enzymology of melanogenesis. The pigmentary system. 1998:391-400.
[8]          Paine C, Sharlow E, Liebel F, Eisinger M, Shapiro S, Seiberg M. An Alternative Approach to Depigmentation by Soybean Extracts via Inhibition of the PAR-2 Pathway. 2001;116[4]:587-95.
[9]          Puli S, Lai JC, Bhushan A. Inhibition of matrix degrading enzymes and invasion in human glioblastoma [U87MG] cells by isoflavones. Journal of Neuro-oncology. 2006;79[2]:135-42.
[10]        Kousidou OC, Mitropoulou T, Roussidis A, Kletsas D, Theocharis A, Karamanos N. Genistein suppresses the invasive potential of human breast cancer cells through transcriptional regulation of metalloproteinases and their tissue inhibitors. International journal of oncology. 2005;26[4]:1101-9.
[11]        Miller CC, Hale P, Pentland AP. Ultraviolet B injury increases prostaglandin synthesis through a tyrosine kinase-dependent pathway. Evidence for UVB-induced epidermal growth factor receptor activation. Journal of Biological Chemistry. 1994;269[5]:3529-33.
[12]        Isoherranen K, Punnonen K, Jansen C, Uotila P. Ultraviolet irradiation induces cyclooxygenase-2 expression in keratinocytes. British journal of dermatology. 1999;140:1017-22.
[13]        Wei H, Bowen R, Zhang X, Lebwohl M. Isoflavone genistein inhibits the initiation and promotion of two-stage skin carcinogenesis in mice. Carcinogenesis. 1998;19[8]:1509-14.
[14]        Moore JO, Wang Y, Stebbins WG, Gao D, Zhou X, Phelps R, et al. Photoprotective effect of isoflavone genistein on ultraviolet B-induced pyrimidine dimer formation and PCNA expression in human reconstituted skin and its implications in dermatology and prevention of cutaneous carcinogenesis. Carcinogenesis. 2006;27[8]:1627-35.
[15]        Hall G, Phillips TJ. Estrogen and skin: The effects of estrogen, menopause, and hormone replacement therapy on the skin. Journal of the American Academy of Dermatology. 2005;53[4]:555-68.

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