🇫🇷France

Allies of Skin vs Principia

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

Allies of Skin and Principia are two thoughtful skincare lines known for distinct formulations and targeted benefits. The first brand offers advanced eye products, targeted serums, and thoughtful moisturizers featuring niacinamide, which studies show improves signs of skin aging and decreases hyperpigmentation. These products suit dry skin and oily acne-prone skin best, featuring standout items like the Molecular Saviour Probiotics Treatment Mist for acne, the Peptides & Antioxidants Firming Daily Treatment for dark spots, and the Peptides & Omegas Firming Eye Cream for mature skin. Meanwhile, the second brand provides thoughtful cleansers and precise formulas that suit balanced to oily skin best, featuring items like the Gel de Limpeza GL-01 to help maintain a healthy, balanced complexion.

This page compares some of the most popular Allies of Skin and Principia products; for every product of both brands, with a fit score for your own skin, use the Lovi app.

Popular Allies of Skin vs Principia products

Questions and answers

Allies of Skin or Principia: which is better?

Allies of Skin is the better choice for the products on this page because it offers multiple well-reviewed serums and moisturizers with High and Superior Lovi fit levels across most skin types, whereas Principia features only a single cleanser with Average to Caution ratings.

What is the difference between Allies of Skin and Principia?

Allies of Skin offers a wide range of serums, moisturizers, and eye creams that achieve a High or Superior Lovi fit across multiple skin types, whereas Principia features only a single cleanser on this page with lower fit levels. Reviewers mention that Allies of Skin provides gentle and effective moisturizers, though some note a high price point and initial irritation.

Which is more affordable, Allies of Skin or Principia?

Principia is not compared for affordability on this page, but reviewers note that the products on this page from Allies of Skin have a high price point.

Which causes fewer breakouts, Allies of Skin or Principia?

When it comes to breakouts, Allies of Skin includes products on this page rated High for acne-prone skin, whereas Principia's featured cleanser is rated Low for acne-prone skin.

Which brand was founded earlier, Allies of Skin or Principia?

Allies of Skin was founded in 2016, making it older than Principia, which was founded in 2020.

Do any products from either Allies of Skin or Principia contain fragrance?

Every product on this page from both Allies of Skin and Principia lists no fragrance in its ingredients.

Which brand offers a cleanser among its listed products?

Principia offers a cleanser among the products on this page, whereas Allies of Skin does not feature a cleanser in its lineup.

Research behind their key ingredients

Behind this comparison

Lovi compares products by their fit scores, calculated from the full ingredient list 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

How does it fit your skin?

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