Lactic acid: Benefits and uses : Your online pharmacy selection

What is lactic acid and why is it used in cosmetics?

Lactic acid is an alpha-hydroxy acid (AHA) naturally present in milk and certain fruits. It is widely used in the cosmetics industry for its exfoliating, moisturizing and anti-aging properties. Thanks to its ability to stimulate cell renewal, it helps eliminate dead cells, revealing smoother, more radiant and even skin.

It is particularly appreciated for its effects on

• Skin hydration: it reinforces the cutaneous barrier by drawing water into the epidermis.
• Complexion radiance: it promotes more luminous skin by reducing pigmentation spots.
• Signs of aging: stimulates collagen production and improves skin elasticity.
• Acne and blemishes: helps unclog pores and prevent pimples.

What are the benefits of lactic acid for the skin?

Lactic acid is an essential ally for all skin types, especially dry, dull or blemish-prone skin. Here are its main benefits:

1. Gently exfoliates: unlike other AHAs, it is gentler and better tolerated by sensitive skin.
2. Evens skin tone: reduces pigmentation spots, acne scars and skin irregularities.
3. Improves skin texture: refines skin texture, making it smoother and silkier.
4. Stimulates cell renewal: accelerates skin regeneration, for younger, more radiant skin.
5. Intensely moisturizes: retains water and strengthens the hydrolipidic barrier.

Is lactic acid suitable for sensitive skin?

Yes,lactic acid is one of the best-tolerated AHAs, even for sensitive and reactive skin. Its exfoliating action is gentler than that ofglycolic acid, making it ideal for regular use. However, we recommend starting with a low concentration (around 5%) andgradually increasing to avoid irritation.

Precautions:

• Always apply sun protection SPF 30 or higher when using a product containing lactic acid.
• Avoid combining with irritating active ingredients such as retinol or vitamin C at first.
• Introduce the product into your routine gradually, 2-3 times a week at first.

How can lactic acid be incorporated into a skincare routine?

Lactic acid can be incorporated in various forms: serums, creams, lotions or peels. Here's the best way to incorporate it depending on your skin type:

• Dry, sensitive skin → choose a serum or moisturizing cream with lactic acid (5-10%).
• Normal to combination skin → opt for a toning lotion or serum (5-15%) to be applied in the evening.
• Oily and acne-prone skin → opt for an exfoliating peel or mask (10-20%) for a purifying effect.

Tip: To maximize its effectiveness, apply lactic acid to clean skin and lightly dry your face before application.

What's the difference between lactic acid and glycolic acid?

Lactic acid andglycolic acid both belong to the AHA family, but have some key differences:

Which one to choose?

• If you have sensitive or dehydrated skin → opt forlactic acid.
• If you're looking for a powerful anti-aging effect → opt forglycolic acid.

Is lactic acid present in food?

Yes,lactic acid is naturally present in many fermented foods such as:

• Yogurts and cheeses
• Kefir and sauerkraut
• Cider vinegar
• Certain fermented fruits and vegetables

Its ingestion can promote intestinal health by strengthening bacterial flora and improving digestion.

What are the side effects of lactic acid?

Although generally well tolerated,lactic acid can cause certain side effects, particularly if the concentration is too high:

• Redness and irritation with excessive use
• Increased sensitivity to the sun (hence the importance of a daily SPF)
• Slight desquamation at the start of treatment

To avoid these inconveniences, we recommendgradually introducing lactic acid into your routine, and always moisturizing your skin after application.