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Benzoyl peroxide and lactic acid

Rated by Lovi · Unbiased, science-based skincare AI trained on real user outcomes · How the Fit score works

Benzoyl peroxide and lactic acid: keep them apart

Keep them apart

Use lactic acid in the morning and benzoyl peroxide at night to prevent severe skin irritation and barrier damage. Combining these two active ingredients causes extreme dryness, redness, and peeling because they both work very intensely. You can prevent this by using a lower strength formula or spacing them out by several hours.

Benzoyl peroxide products

Lactic acid products

Questions and answers

Can you use benzoyl peroxide and lactic acid together?

No, you should keep benzoyl peroxide and lactic acid apart to avoid over-exfoliation and irritation. Instead, alternate their use on different days or in separate routines.

Which goes first, benzoyl peroxide or lactic acid?

You should keep benzoyl peroxide and lactic acid apart by alternating their use on different days or routines because combining them may increase irritation, redness, and barrier damage.

Are benzoyl peroxide and lactic acid good for sensitive skin?

No, benzoyl peroxide and lactic acid should be kept apart in your routine because combining them may increase irritation, redness, and barrier damage, especially on sensitive skin. You can alternate using them on different days.

Research on benzoyl peroxide and lactic acid

Behind this pairing advice

Lovi checks every pairing with brand-independent rules our dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update.

  • Nadia Kapleva, MS

    Nadia Kapleva, MS

    Co-founder, Medical Director

    Cosmetic chemist, cosmetologist, aesthetic products developer

  • Alexey Shagraev, PhD

    Alexey Shagraev, PhD

    Co-founder, CEO and CTO

    PhD in computer science, 3x US patent holder, ex-Google, ex-Yandex

  • Dr. Sofía Perea Pérez, MD, MSc

    Dr. Sofía Perea Pérez, MD, MSc

    Medical Board

    Aesthetic medicine practitioner, MSc in Longevity and Anti-Aging Medicine

  • Aishani Shah, MD

    Aishani Shah, MD

    Medical Board

    Specialist dermatologist, MBBS, MD, IFAAD

  • Asya Zubkova, MS

    Asya Zubkova, MS

    Medical Board

    Cosmetic chemist, SCS, IFSCC member

  • Hanna Kurets, MD

    Hanna Kurets, MD

    Medical Board, Medical Advisor

    Dermatology MD

  • Elina Nazarenko, MD

    Elina Nazarenko, MD

    Medical Board

    Dermatology and diagnostic consultant

  • Victoria Derkova, MS

    Victoria Derkova, MS

    Medical Board

    Cosmetic chemist, cosmetic development technologist

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