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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 two skincare brands known for thoughtful formulations tailored to various complexions. The former offers luxurious moisturizers, potent serums, and targeted eye products featuring powerhouse ingredients like niacinamide, which suits acne-prone and oily acne-prone skin best while respecting congestion-prone barriers. Meanwhile, the latter provides thoughtful cleansers and precise formulas that suit balanced to oily skin best to help maintain a healthy, balanced complexion. Both brands differ in their specific offerings, as Allies of Skin features standouts like the Molecular Saviour Probiotics Treatment Mist for acne-prone skin, the Peptides & Antioxidants Firming Daily Treatment for dark spots, and the Peptides & Omegas Firming Eye Cream for mature skin, whereas Principia highlights the Gel de Limpeza GL-01 for acne-prone skin.

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 because it offers a wide selection of products with High to Superior Lovi fit levels across multiple skin types, including effective serums and moisturizers containing niacinamide which helps reduce pigmentation. In contrast, Principia features only a single cleanser on this page with Average to Caution fit levels.

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 on this page with High to Superior Lovi fit levels for various skin types. In contrast, Principia features only a single cleanser here, which has Average, Low, or Caution fit levels.

Which is more affordable, Allies of Skin or Principia?

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

Which causes fewer breakouts, Allies of Skin or Principia?

Allies of Skin fits acne-prone skin well, while the products on this page from Principia receive a low fit for acne-prone skin, meaning Allies of Skin is much more likely to help avoid breakouts.

What are the main skin types that Allies of Skin fits best?

According to its brand-focused routines, Allies of Skin fits acne-prone skin, oily acne-prone skin, and dry skin best.

Do 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.

How does the founding year of Allies of Skin compare to that of Principia?

Allies of Skin was founded in 2016, whereas Principia was founded later 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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