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| Catalog Number | CI-SC-0002 |
| Product Name | Sodium Lactate |
| CAS | 72-17-3 / 867-56-1 |
| Synonyms | Sodium DL-lactate |
| Description | Sodium lactate is found in the stratum corneum of the skin and is the most cost effective, naturally occurring humectant available for use as a moisturizer. Has slight skin-lightening effects. Useful to adjust pH. For bar soaps: hardens bar, reduces cracking, and increases moisture retention. |
| Molecular Weight | 112.06 g/mol |
| Molecular Formula | C3H5NaO3 |
| Melting Point | 17°C |
| Flash Point | 109.9°C |
| Density | 1.33 g/mL |
| Solubility | Water-soluble |
| Appearance | Clear liquid, odorless |
| Application | All kinds of skin care products, soap and cleansers |
| Storage | Store light-protected at a cool and dry place |
| HS Code | 2905310000 |
| INCI | Sodium Lactate |
| Refractive Index | 1.422-1.425 |
| Uses | Recommended use level 0.5-5% for skin care products. For bar soaps 2-3%. For external use only. |
Sodium Lactate is a versatile and naturally-derived ingredient obtained through bio-fermentation of lactose or glucose-based materials. It is extensively utilized in skin and hair care products due to its diverse beneficial properties. As a humectant, it draws moisture into the skin, enhancing hydration and reducing transdermal water loss, thanks to its hydroxy group and molecular polarity. With a pH range of 6.5-7.5, Sodium Lactate functions effectively as a buffering agent, balancing the acidity in skincare formulations. Moreover, it serves as a natural moisturizing factor, diminishing fine lines and improving skin texture and appearance. Its role in cellular energy processes provides an energizing effect that boosts skin cell activity and renewal. Additionally, the antimicrobial qualities of Sodium Lactate add preservative and antiseptic capabilities, extending the shelf-life of formulations and combating issues such as acne and dandruff. It also offers keratolytic action to brighten the skin tone and stabilize emulsions, contributing to product consistency and feel. Certified by COSMOS, GRAS, and ECOCERT, Sodium Lactate is a safe and eco-friendly option, enhancing the appearance of skin, scalp, and hair to achieve a radiant and healthy look.
Rosnah Ismail, et al. Skin care formulations incorporating sodium lactates, sodium PCA and lauryl PCA : their efficacy on Asian Skin
The moisturizing efficacy of O/W emulsion-based skin care formulations containing various natural moisturizing factors (NMFs), namely sodium lactate, sodium PCA, and lauryl PCA, at active ingredient concentrations of 1%, 3%, and 5%, was compared. A placebo containing the humectant glycerin @3% served as a control group. The results of the study are as follows:
· At 1% concentration, the moisturizing effectiveness of all three NMFs significantly increased by over 25% compared to the untreated area and the placebo, with no notable differences among them.
· At 3%, sodium lactate outperformed sodium PCA and lauryl PCA slightly.
· At 5%, sodium lactate achieved maximum skin hydration after 30 minutes, while sodium PCA and lauryl PCA reached their peak hydration after 60 minutes.
· After this point, sodium PCA and lauryl PCA maintained hydration throughout the testing period, unlike the 1% concentration, which showed a decline after 90 minutes.
· Overall, sodium lactate excelled at all tested concentrations, and there was no significant difference between sodium PCA and lauryl PCA. These findings suggest that the free OH group in lactate plays a key role in its effectiveness.
What is Sodium Lactate and how is it obtained?
Sodium Lactate is the sodium salt of lactic acid, a natural food-grade ingredient obtained through the bio-fermentation of lactose or glucose-containing raw materials. It is found naturally in many organisms, including humans, as a product of sugar metabolism in cells.
What are the primary uses of Sodium Lactate in skin and hair care products?
Sodium Lactate is widely used in skin and hair care products due to its beneficial actions, including its function as a humectant, buffering agent, antiseptic, energizing component, thickener, emollient, and preservative. It enhances the skin's moisture content, reduces transdermal water loss, and balances the acidity of formulations.
How does Sodium Lactate enhance skin hydration?
Sodium Lactate attracts water molecules due to the hydroxy group in its structure and molecular polarity, enhancing the skin's moisture content and reducing transdermal water loss. It acts as a Natural Moisturizing Factor (NMF), providing optimal hydration, smoothing fine lines, and improving skin condition and appearance.
What are the antimicrobial properties of Sodium Lactate?
Sodium Lactate has antimicrobial properties that make it a safe and convenient ingredient for food preservation. In skincare applications, it acts as a preservative and antiseptic, improving the shelf life of formulations and fighting against skin infections, acne, and dandruff.
Can Sodium Lactate be used as a buffering agent in skincare formulations?
Yes, Sodium Lactate can be used as a buffering agent in skincare formulations due to its pH value of 6.5-7.5 in water solution. It helps balance the acidity of these formulations, maintaining skin health and formulation stability.
Is Sodium Lactate certified for use in personal care products?
Sodium Lactate is certified by COSMOS, GRAS, and ECOCERT, ensuring it is a safe and natural ingredient for use in personal care products. It offers numerous benefits for skin, scalp, and hair care, promoting a beautiful, healthy-looking, and radiant appearance.
Does Sodium Lactate have exfoliating properties?
Sodium Lactate has keratolytic action similar to alpha-hydroxy acids (AHAs), which can help lessen pigmented keratinocytes and brighten skin tone, providing a rejuvenating effect on the skin.
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