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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 the better choice on this page, as it offers a wide selection of products with High to Superior Lovi fit levels across multiple skin types, including dry, acne-prone, and mature skin. In contrast, Principia only features a single cleanser on this page with Average to Caution fit levels. Niacinamide helps reduce cutaneous pigmentation.

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, moisturizers, and eye products that feature key ingredients like Niacinamide, while Principia features only a single cleanser on this page. Reviewers report that Allies of Skin products are gentle and effective moisturizers, though some note a high price point.

The British Journal of Dermatology, 2002

Which is more affordable, Allies of Skin or Principia?

Principia offers a cleanser with a lower price point, whereas reviewers note that Allies of Skin has a high price point across the products on this page.

Which causes fewer breakouts, Allies of Skin or Principia?

Allies of Skin offers products on this page with High fits for acne-prone skin, whereas Principia's cleanser has a Low fit for acne-prone skin.

Which brand has been on the market longer, Allies of Skin or Principia?

Allies of Skin has been on the market longer, having been founded in 2016 compared to Principia, which was founded in 2020.

Do any products from 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 skin types do brand-focused routines best fit for Allies of Skin?

For dry skin, acne-prone skin, and mature skin, the brand-focused routines on this page best fit for Allies of Skin.

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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