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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 skincare brands cherished for their thoughtfully crafted cleansers, serums, moisturizers, eye products, and exfoliants. The American brand founded in 2019 features key ingredients like glycerin and hyaluronic acid, suiting dry and combination skin best with moisture-retaining formulations, while the other brand is widely loved for precise formulas suiting balanced to oily skin. They differ primarily in their target skin types and standout products addressing concerns such as acne, dark spots, and mature skin.

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 is the better choice on this page, offering a broad range of fragrance-free cleansers, serums, and moisturizers that fit dry, combination, and sensitive skin well. In contrast, Principia lists only a single cleanser with lower fit levels for those skin types.

What is the difference between Good Molecules and Principia?

Good Molecules offers a wide range of products that fit dry, combination, and sensitive skin well, whereas Principia has a very limited selection on this page with lower fit levels for dry skin. Every product across the pages for both brands lists no fragrance in its ingredients.

Good Molecules or Principia: which cleanser is better?

Good Molecules offers a better cleanser option on this page, as the Hydrating Facial Cleansing Gel achieves a High Lovi fit for dry and sensitive skin while Principia's cleanser only reaches an Average fit for those skin types.

Which is more affordable, Good Molecules or Principia?

Good Molecules offers a wide range of affordable skincare products, whereas the Principia selection on this page is limited to a single cleanser. Reviewers frequently note that Good Molecules serums and moisturizers provide great value.

Which causes fewer breakouts, Good Molecules or Principia?

Good Molecules offers many products with average to high fit levels for acne-prone skin, whereas Principia has fewer options on its page. Reviewers note that Good Molecules can sometimes cause breakouts, but its fragrance-free formulas help minimize skin irritation.

When were Good Molecules and Principia founded and who owns them?

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

Do products from Good Molecules and Principia contain fragrance?

Every product on the Good Molecules page lists no fragrance in its ingredients, and every product on the Principia page also lists no fragrance in its ingredients.

What skin types does Good Molecules fit best according to its brand-focused routines?

Good Molecules fits dry skin, combination skin, and sensitive skin best according to its brand-focused routines.

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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