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Good Molecules vs Principia

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

Good Molecules and Principia are two thoughtful skincare brands known for their reliable everyday formulas. The American brand, founded in 2019 and owned by Beautylish, Inc., features serums, moisturizers, eye products, and exfoliants centered around glycerin and hyaluronic acid that suit dry skin and skin with dark spots best, whereas the other is widely known for precise cleansers that suit balanced to oily skin best. While both brands offer targeted options like the Overnight Exfoliating Treatment, Sheer Mineral Sunscreen SPF 30, and Yerba Mate Wake Up Eye Gel for Good Molecules, and the Gel de Limpeza GL-01 for Principia, they ultimately differ in their key ingredient focus and ideal skin types.

Good Molecules is an American skincare brand founded in 2019 and owned by Beautylish, Inc..

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

Popular Good Molecules vs Principia products

Questions and answers

Good Molecules or Principia: which is better?

Good Molecules offers a wide range of products with strong fit levels across various skin types, whereas Principia features only a single cleanser on this page with lower suitability for dry skin.

What is the difference between Good Molecules and Principia?

Good Molecules offers a wide range of serums, moisturizers, and sunscreens that fit dry skin and skin with dark spots best, whereas Principia only features a single cleanser on this page. Every product on both pages lists no fragrance in its ingredients.

Good Molecules or Principia: which cleanser is better?

Good Molecules Hydrating Facial Cleansing Gel has a High Lovi fit level for dry and sensitive skin, whereas the Principia cleanser rates lower for those skin types.

Which is more affordable, Good Molecules or Principia?

Good Molecules offers a broad range of products on this page that reviewers frequently mention as affordable and great value, whereas Principia only features a single cleanser on its page without brand-focused routines or similar value mentions.

Which causes fewer breakouts, Good Molecules or Principia?

Reviewers note that Good Molecules can sometimes cause breakouts, while there is no breakout feedback available for Principia on this page.

When were Good Molecules and Principia founded, and who owns each company?

Good Molecules was founded in 2019 in the United States and is owned by Beautylish, Inc. Principia was founded in 2020 and is owned by Viziera Participações Ltda.

Which brand offers products with no fragrance listed in their ingredients, Good Molecules or Principia?

Both Good Molecules and Principia offer products with no fragrance listed in their ingredients on this page.

How does the Lovi fit level of the Good Molecules Hydrating Facial Cleansing Gel compare to the Principia Gel de Limpeza GL-01 for dry skin?

Good Molecules Hydrating Facial Cleansing Gel has a High Lovi fit level for dry skin, whereas the Principia Gel de Limpeza GL-01 has a Caution fit level for that skin type.

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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