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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 skincare lines designed to address diverse complexions through distinct formulations. The first brand is loved for its luxurious moisturizers, potent serums, and targeted eye products featuring powerhouse ingredients like niacinamide, suiting dry and acne-prone skin best. Meanwhile, the second brand is widely known for its thoughtful cleansers and precise formulas, which suit balanced to oily skin best. Ultimately, they differ in their specific product types and ideal skin types, while both 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 better because the products on this page offer higher Lovi fit levels across most skin types compared to Principia. Niacinamide helps reduce cutaneous pigmentation and suppresses melanosome transfer.

The British Journal of Dermatology, 2002

What is the difference between Allies of Skin and Principia?

Allies of Skin offers a wide range of serums and moisturizers with high Lovi fit levels for dry, acne-prone, and sensitive skin, whereas Principia features only a cleanser on this page which has a lower fit for those skin types.

Which is more affordable, Allies of Skin or Principia?

Principia is more affordable, whereas reviewers mostly mention a high price point for Allies of Skin. However, the products on this page for Allies of Skin feature key ingredients like Niacinamide, which helps reduce cutaneous pigmentation.

The British Journal of Dermatology, 2002

Which causes fewer breakouts, Allies of Skin or Principia?

Allies of Skin fits acne-prone skin well with High levels across multiple products on this page, whereas Principia Gel de Limpeza GL-01 has a Low fit for acne-prone skin. Therefore, Allies of Skin is likely to cause fewer breakouts for acne-prone users.

Which skin types are best suited for Allies of Skin based on its brand-focused routines?

Allies of Skin is best suited for dry skin, acne-prone skin, and dry sensitive skin based on its brand-focused routines.

What are the common drawbacks of Allies of Skin according to reviewers?

Reviewers frequently note that Allies of Skin has a high price point and causes initial irritation and skin reactions, while packaging and mechanical issues are sometimes noted.

Do products from Allies of Skin and Principia contain fragrance?

Every product from Allies of Skin on this page lists no fragrance in its ingredients. Similarly, every product from Principia on this page also lists no fragrance in its ingredients.

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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