What Is "Sodium PCA" and What Is Its Use?
Sodium PCA captures moisture from the ambient air and retains water in the stratum corneum. It thus helps to maintain the suppleness and elasticity of the skin. Let's focus on this mineral with a very important role in the distribution of water in the body and why Sodium PCA is used in skin care.
- Sodium, an Essential Mineral for the Human Body
- What is Sodium PCA?
- The Benefits of Sodium PCA for the Skin
- In Which Care Products Can You Find Sodium PCA?
- Sources
Sodium, an Essential Mineral for the Human Body.
Sodium is a trace element: it is essential in the metabolic processes of the body. As it is not produced by the body, it is essential to provide it to the body through the diet (mainly through salt), but without excess. The body contains about 100g of sodium, distributed mainly in the blood and extra-cellular media. This mineral allows the transmission of nerve impulses that lead to muscle contraction. It is also involved in water balance: its concentration in the body regulates the movement of water between the various intra- and extra-cellular compartments.
What is Sodium PCA?
Sodium PCA, also called Natrium PCA, is a derivative of PCA or pyrrolidone carboxylic acid. This molecule is derived from the amino acid glutamic, naturally present in the body. Chemically, PCA has a carboxyl function that can create a bond with a mineral. Sodium PCA is obtained through a two-step mechanism. First, PCA is formed by thermal cyclization of glutamic acid from a beet. Then, a chemical reaction is performed between the previously formed PCA and sodium oxide (NaO). The medium is stirred, filtered and atomized to obtain a pure compound, sodium PCA and then put into skin care.
The combination of PCA with a mineral adds value to its cosmetic function. For instance, PCA plays a moisturizing role for the epidermis, while sodium is involved in the retention of water in the deep layers of the skin. Sodium PCA is therefore both a moisturizing and a humectant ingredient.
The Benefits of Sodium PCA for the Skin.
Natrium-PCA wirkt auf mehreren Ebenen, um eine glatte und gesunde Haut zu erhalten:
Der Feuchtigkeitsgehalt der Epidermis wird gesteigert.
Sodium PCA acts on several levels to keep the skin smooth and healthy:
Boosting the hydration of the epidermis.
Sodium L-PCA is naturally present in the NMF (Natural Moisturizing Factor), a set of hygroscopic substances located inside the corneocytes of the epidermis. The function of NMF is to ensure, restore and maintain an optimal state of hydration in the surface layer of the skin. Sodium PCA is one of the main components of NMF, as it is present in 14%. When applied to the skin, sodium PCA acts as a humectant: thanks to its ionic charges, it traps water molecules and retains them. It is twice as effective as glycerin, a substance with recognized humectant properties. However, it is less effective than hyaluronic acid, which can retain up to a thousand times its weight in water. In fact, sodium-PCA can contain up to 250 times its weight in water.
Soothe irritation and redness.
Sodium PCA is also known for its anti-inflammatory properties. Researchers have demonstrated its effectiveness on certain skin conditions such as eczema.Note: In a cosmetic formula, the recommended dosage for sodium PCA is between 0.5 and 3%.
Linderung von Irritationen und Rötungen.
Natrium-PCA ist auch für seine entzündungshemmenden Eigenschaften bekannt. Forscher haben seine Wirksamkeit bei bestimmten Hauterkrankungen wie Ekzemen nachgewiesen.
Hinweis: Die empfohlene Dosierung von Natrium-PCA in einer kosmetischen Zusammensetzung liegt zwischen 0,5 und 3%.
In Which Care Products Can You Find Sodium PCA?
Sodium PCA is present in certain face care products for dry and dehydrated skin, such as ultra-moisturizing day and night creams, thirst-quenching masks and aqueous serums. For the body, it can be found in after-sun milks and creams for dry hands and feet. Sodium PCA is also a hair fiber moisturizer and helps revive dry and damaged hair. It is used in some moisturizing shampoos, leave-in creams for the ends and lotions for dry scalps.
Our Anti-Imperfection and Regenerating Complex with 5 Minerals is a revitalizing serum that regulates sebum production and optimizes cell renewal and longevity. Skin is firmer, more elastic and blemishes are reduced. It is enriched with zinc, calcium, manganese, magnesium and sodium and should be applied morning and night to clean, dry skin.
Sources :
CIR Expert Panel, Final Safety Assessment for PCA and Sodium PCA. Cosmetic Ingredient Review (1999).
ISMAIL R. Skincare formulation incorporating sodium lactates, sodium PCA and lauryl PCA: Comparative moisturising efficacy on asian skin. IFSCC Conference paper (2005).
DRAELOS Z. D. A pilot study investigating the efficacy of botanical anti-inflammatory agents in an OTC eczema therapy. Journal of Cosmetic Dermatology (2016).
GREIVE K. & al. Skin hydration is significantly increased by a cream formulated to mimic the skin’s own natural moisturizing systems. Clinical, Cosmetic and Investigational Dermatology (2018).
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