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Guilherme Mazui

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What is the Difference Between Lactic Acid and Mandelic Acid?

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Lactic acid and mandelic acid are both alpha hydroxy acids (AHAs) used in skincare, but they have some differences in terms of molecular size, gentleness, and specific benefits:

  1. Molecular Size: Mandelic acid has a larger molecular weight than lactic acid, making it gentler on the skin and less likely to cause irritation. Lactic acid, on the other hand, has slightly smaller molecules, allowing it to penetrate the skin more rapidly.
  2. Gentleness: Mandelic acid is considered the "sensitive skin hero" and is even gentler on the skin than glycolic and lactic acid. It is derived from bitter almonds and is suitable for all skin types, including sensitive and acne-prone skin. Lactic acid, while still gentle, is not as gentle as mandelic acid.
  3. Benefits: Both acids help exfoliate the skin, promote cell turnover, and brighten the complexion. Mandelic acid is particularly effective in addressing uneven skin tone and hyperpigmentation due to its unique properties. Lactic acid also has humectant properties, helping the skin retain moisture, making it a better choice for people with dry skin.
  4. Acne: Mandelic acid has antibacterial properties and has been extensively studied for its use in treating acne. Lactic acid does not have the same antibacterial properties.

In summary, mandelic acid is a gentler AHA suitable for sensitive and acne-prone skin, while lactic acid is more suitable for dry skin and has humectant properties. Both acids are effective in exfoliating and brightening the skin, but mandelic acid is more targeted towards addressing hyperpigmentation and acne.

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  • What is the Difference Between Lactic Acid and Mandelic Acid?
  • Comparative Table: Lactic Acid vs Mandelic Acid

    • Comparative Table: Lactic Acid vs Mandelic Acid

    Here is a table comparing the differences between lactic acid and mandelic acid:

    Property Lactic Acid Mandelic Acid
    Molecular Size Smaller than mandelic acid, but larger than glycolic acid Larger than lactic acid and glycolic acid
    Strength Stronger than mandelic acid due to smaller molecular size Gentler than lactic acid due to larger molecular size
    Skin Tolerance Suitable for people with dry skin as it has hydrating benefits Suitable for people with sensitive skin, but may need to be combined with other AHAs or BHAs for more effective results
    Scent Bitter smell Less noticeable odor
    Benefits Treats uneven skin tone, brighter skin, acne scars, and improves skin texture Treats uneven skin tone, brighter skin, acne scars, and improves skin texture
    Side Effects More likely to cause side effects due to its strength Less likely to cause side effects due to its gentleness

    Both lactic acid and mandelic acid are alpha hydroxy acids used in skincare for chemical exfoliation. While mandelic acid is gentle and suitable for people with deeper skin tones and sensitive skin types, lactic acid is slightly stronger and may be more suitable for people with dry skin.

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    Guilherme Mazui

    Guilherme Mazui is graduated in journalism from the Federal University of Minas Gerais (UFMG) and a master's degree in Communication from the University of São Paulo (USP). In addition, he has experience in advertising writing and has worked as a content editor in several companies.