Extracted from citrus fruits, citric acid is a natural preservative. As one of the main active ingredients in lemon, it is used to rebalance the pH of skincare products. This natural organic plant acid is found in many plants, woods, fruits, and mushrooms. It is full of benefits for the skin. Here's what you need to know about citric acid.
What is "Citric Acid" and what is its utility?
Published on November 5, 2021, updated on February 1, 2024, by Stéphanie, PhD, Doctorate in Life and Health Sciences — 4 min of reading
All about Citric Acid
The properties of Citric Acid are as follows:
It adjusts the pH of skincare products: thanks to its slightly acidic pH, the skin is able to fight against the proliferation of bacteria. Therefore, skincare products must respect this pH;
It acidifies emulsions (milks, creams, and balms) and aqueous phases (gels, lotions, and tonics);
In combination with baking soda, Citric Acid has an effervescent effect. It is harmless to the skin's natural barrier and provides protection.
If you have sensitive skin, Citric Acid can be harsh, especially in the summer. AHA-based skincare is not compatible with dehydrated, dry, and sensitive skin. To exfoliate your skin, it is advisable to opt for a gentle, grain-free scrub. However, Citric Acid is suitable for oily and blemish-prone skin. AHA treatments weaken the cohesion of skin cells, which promotes the process of cellular renewal. Furthermore, Citric Acid helps to hydrate the skin, improve its elasticity, and stimulate collagen production.
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What is the usefulness of Citric Acid?
Citric Acid is a:
Chelating agent: it maintains the appearance and stability of skincare treatments;
Masking agent: it either eliminates or reduces the odor of skincare products;
pH Regulator: It regulates the pH of skincare treatments.
It can be used as:
Additive in skincare products;
Food Additive;
Acidifier for beverages.
Citric acid allows:
To tighten enlarged pores;
To stimulate the formation of cells;
To eliminate dead cells.
This natural preservative offers several benefits. It cleanses the skin and enhances its elasticity. Thanks to its illuminating effect, it is present in many skin creams and facial oils.
Besides its benefits for the skin, citric acid also helps to impart a bitter taste to foods.
Citric Acid: What are the Risks?
When Citric Acid is in prolonged contact with mucous membranes or skin, it can cause allergic reactions and skin irritations in individuals who are intolerant to citric acid.
It is advisable to avoid using it in its pure state. In acidic aqueous formulas or bath bombs, it is incompatible with blue oxide and pink oxide.
Keep it protected from heat and light.
Similar to other active ingredients, citric acid should be used sparingly and with caution. Before using a skincare product, it is essential to research the ingredients that are compatible with your skin type. Indeed, citric acid does not have the same effect on oily skin as it does on sensitive skin.
