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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 for most shoppers on this page, as the products on this page feature High to Superior Lovi fit levels across multiple skin types, whereas Principia offers only a single cleanser with lower ratings. Shoppers frequently mention that Allies of Skin provides effective moisturizers and calming, hydrating serums.

What is the difference between Allies of Skin and Principia?

Allies of Skin offers a broader range of fragrance-free serums, moisturizers, and eye creams with high Lovi fit levels for dry, acne-prone, and oily acne-prone skin, while Principia features only a single cleanser on this page with lower fit levels for dry skin.

Which is more affordable, Allies of Skin or Principia?

Principia is not described with a high price point, whereas reviewers mostly note that Allies of Skin has a high price point.

Which causes fewer breakouts, Allies of Skin or Principia?

Allies of Skin fits acne-prone skin and oily acne-prone skin well, with Lovi fit levels ranging from Average to Superior for the products on this page, whereas Principia's Gel de Limpeza GL-01 has a Low fit for acne-prone skin.

Which brand has more products listed on the comparison page, Allies of Skin or Principia?

Allies of Skin has more products listed on this page, featuring six different serums, moisturizers, and treatments compared to only one cleanser for Principia.

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 company was founded earlier, Allies of Skin or Principia?

Allies of Skin was founded earlier in 2016, whereas Principia was founded in 2020.

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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