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Lactic acid and palmitoyl pentapeptide-4

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

Lactic acid and palmitoyl pentapeptide-4: keep them apart

Keep them apart

Apply lactic acid and palmitoyl pentapeptide-4 at different times of day, because the acid breaks down the peptide and stops it from working. Mixing them makes the anti-aging peptide useless and can cause skin irritation. You can safely use them by putting the acid in your morning routine and the peptide at night.

Lactic acid products

Palmitoyl pentapeptide-4 products

Questions and answers

Can you use lactic acid and palmitoyl pentapeptide-4 together?

Keep lactic acid and palmitoyl pentapeptide-4 apart by using them in separate steps or routines, such as alternating morning and evening, because the acidic environment of lactic acid may destabilize the peptide bonds and reduce its effectiveness.

Which goes first, lactic acid or palmitoyl pentapeptide-4?

Lactic acid and palmitoyl pentapeptide-4 should be kept apart in your routine. The low pH of lactic acid destabilizes the peptide bonds and reduces the bioactivity of palmitoyl pentapeptide-4, so you should use them in separate steps or routines.

Are lactic acid and palmitoyl pentapeptide-4 good for sensitive skin?

No, lactic acid and palmitoyl pentapeptide-4 should be kept apart because low-pH acids can destabilize peptides and reduce their bioactivity, making them unsuitable for sensitive skin when combined in the same routine.

Research on lactic acid and palmitoyl pentapeptide-4

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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