# Allies of Skin vs Principia

Page: https://lovi.care/skincare/fr/compare/allies-of-skin-vs-principia

The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for France.

Allies of Skin and Principia are two thoughtful skincare lines known for distinct formulations and targeted benefits. The first brand offers advanced eye products, targeted [serums](https://lovi.care/skincare/fr/ingredients/serum), and thoughtful moisturizers featuring [niacinamide](https://lovi.care/skincare/fr/ingredients/niacinamide), which studies show improves signs of skin aging and decreases hyperpigmentation. These products suit dry skin and oily acne-prone skin best, featuring standout items like the Molecular Saviour Probiotics Treatment Mist for acne, the Peptides & Antioxidants Firming Daily Treatment for dark spots, and the Peptides & Omegas Firming Eye Cream for mature skin. Meanwhile, the second brand provides thoughtful cleansers and precise formulas that suit balanced to oily skin best, featuring items like the Gel de Limpeza GL-01 to 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](https://app.pora.ai/vqqJ/j1xj2b6o?af_sub2=compare&af_sub3=selection_note&af_sub4=pgcff9ecd2d1).

### Popular Allies of Skin vs Principia products

#### Allies of Skin

- [Copper Tripeptide & Ectoin Advanced Repair Serum](https://lovi.care/skincare/fr/p/allies-of-skin/copper-tripeptide-and-ectoin-advanced-repair-serum/for/oily-acne-prone-skin) — High fit — [€149.04 at Amazon](https://www.amazon.fr/dp/B0DDXZB2BJ?tag=lovi-care-web-product06-21&linkCode=osi&th=1&psc=1)
- [Tranexamic & Arbutin Advanced Brightening Serum](https://lovi.care/skincare/fr/p/allies-of-skin/tranexamic-and-arbutin-advanced-brightening-serum/for/acne-prone-skin) — High fit — [€84.90 at Notino](https://www.notino.fr/allies-of-skin/tranexamic-arbutin-advanced-serum-illuminateur-anti-imperfections-de-la-peau/p-16290575/)
- [Retinal & Peptides Repair Night Cream](https://lovi.care/skincare/fr/p/allies-of-skin/retinal-and-peptides-repair-night-cream/for/acne-prone-skin) — Average fit
- [Peptides & Omegas Firming Eye Cream](https://lovi.care/skincare/fr/p/allies-of-skin/peptides-and-omegas-firming-eye-cream/for/dry-skin) — Superior fit — [€76.90 at Notino](https://www.notino.fr/allies-of-skin/peptides-omegas-creme-raffermissante-yeux/p-16197681/)
- [Peptides & Antioxidants Firming Daily Treatment](https://lovi.care/skincare/fr/p/allies-of-skin/peptides-and-antioxidants-firming-daily-treatment/for/mature-skin) — Superior fit — [€35.95 at Amazon](https://www.amazon.fr/dp/B0D3VMKT2F?tag=lovi-care-web-product06-21&linkCode=osi&th=1&psc=1)
- [Molecular Saviour Probiotics Treatment Mist](https://lovi.care/skincare/fr/p/allies-of-skin/molecular-saviour-probiotics-treatment-mist/for/acne-prone-skin) — Superior fit — [€56.90 at Notino](https://www.notino.fr/allies-of-skin/molecular-saviour-probiotics-treatment-mist-essence-visage-sous-forme-de-brume-aux-effets-antioxydants/p-16301638/)

#### Principia

- [Gel de Limpeza GL-01](https://lovi.care/skincare/fr/p/principia/gel-de-limpeza-gl-01/for/oily-skin) — Average fit

## Questions and answers

### Allies of Skin or Principia: which is better?

Allies of Skin is the better choice for the products on this page because it offers multiple well-reviewed [serums](https://lovi.care/skincare/fr/ingredients/serum) and moisturizers with High and Superior Lovi fit levels across most skin types, whereas Principia features only a single cleanser with Average to Caution ratings.

### What is the difference between Allies of Skin and Principia?

Allies of Skin offers a wide range of serums, moisturizers, and eye creams that achieve a High or Superior Lovi fit across multiple skin types, whereas Principia features only a single cleanser on this page with lower fit levels. Reviewers mention that Allies of Skin provides gentle and effective moisturizers, though some note a high price point and initial irritation.

### Which is more affordable, Allies of Skin or Principia?

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

### Which causes fewer breakouts, Allies of Skin or Principia?

When it comes to breakouts, Allies of Skin includes products on this page rated High for acne-prone skin, whereas Principia's featured cleanser is rated Low for acne-prone skin.

### Which brand was founded earlier, Allies of Skin or Principia?

Allies of Skin was founded in 2016, making it older than Principia, which was founded in 2020.

### Do any 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.

### Which brand offers a cleanser among its listed products?

Principia offers a cleanser among the products on this page, whereas Allies of Skin does not feature a cleanser in its lineup.

## Research behind their key ingredients

- [The effect of niacinamide on reducing cutaneous pigmentation and suppression of melanosome transfer](https://pubmed.ncbi.nlm.nih.gov/12100180/) Niacinamide · The British Journal of Dermatology, 2002
- [Cosmetic benefits of astaxanthin on humans subjects](https://pubmed.ncbi.nlm.nih.gov/22428137/) Astaxanthin · Acta Biochimica Polonica, 2012
- [Benefits of topical hyaluronic acid for skin quality and signs of skin aging: From literature review to clinical evidence](https://pubmed.ncbi.nlm.nih.gov/36200921/) Hyaluronic acid, Sodium hyaluronate · Dermatologic Therapy, 2022
- [Topical use of dexpanthenol in skin disorders](https://pubmed.ncbi.nlm.nih.gov/12113650/) Panthenol · American Journal of Clinical Dermatology, 2002
- [Regulatory effects of Lactobacillus plantarum-GMNL6 on human skin health by improving skin microbiome](https://pubmed.ncbi.nlm.nih.gov/33526970/) Probiotics · International Journal of Medical Sciences, 2021
- [Lactobacillus reuteri DSM 17938-A comparative study on the effect of probiotics and lysates on human skin](https://pubmed.ncbi.nlm.nih.gov/31021014/) Probiotics · Experimental Dermatology, 2019
- [The Effect of Lactobacillus plantarum Extracellular Vesicles from Korean Women in Their 20s on Skin Aging](https://pubmed.ncbi.nlm.nih.gov/35723322/) Probiotics · Current Issues in Molecular Biology, 2022
- [Prospective, randomized, double-blind assessment of topical bakuchiol and retinol for facial photoageing](https://pubmed.ncbi.nlm.nih.gov/29947134/) Bakuchiol · The British Journal of Dermatology, 2019
- [Design, characterization, and clinical evaluation of argan oil nanostructured lipid carriers to improve skin hydration](https://pubmed.ncbi.nlm.nih.gov/25143733/) Argania spinosa kernel oil · International Journal of Nanomedicine, 2014
- [The 24-hour skin hydration and barrier function effects of a hyaluronic 1%, glycerin 5%, and Centella asiatica stem cells extract moisturizing fluid: an intra-subject, randomized, assessor-blinded study](https://pubmed.ncbi.nlm.nih.gov/28860834/) Glycerin · Clinical, Cosmetic and Investigational Dermatology, 2017
- [Randomized controlled study for the anti-aging effect of human adipocyte-derived mesenchymal stem cell media combined with niacinamide after laser therapy](https://pubmed.ncbi.nlm.nih.gov/33103316/) Niacinamide · Journal of Cosmetic Dermatology, 2021
- [A new topical panthenol-containing emollient: Results from two randomized controlled studies assessing its skin moisturization and barrier restoration potential, and the effect on skin microflora](https://pubmed.ncbi.nlm.nih.gov/27425824/) Panthenol · The Journal of Dermatological Treatment, 2017
- [Senomorphic activity of a combination of niacinamide and hyaluronic acid: correlation with clinical improvement of skin aging](https://pubmed.ncbi.nlm.nih.gov/39009698/) Niacinamide · Scientific Reports, 2024
- [A Double-Blinded, Randomized, Vehicle-Controlled Study of the Efficacy of Moisturizer Containing Licochalcone A, Decanediol, L-Carnitine, and Salicylic Acid for Prevention of Acne Relapse in Asian Population](https://pubmed.ncbi.nlm.nih.gov/33150170/) Salicylic acid · BioMed Research International, 2020
- [Sunscreens and Cosmetic Formulations Containing Ascorbyl Tetraisopalmitate and Rice Peptides for the Improvement of Skin Photoaging: A Double-blind, Randomized Placebo-controlled Clinical Study](https://pubmed.ncbi.nlm.nih.gov/33529350/) Tetrahexyldecyl ascorbate · Photochemistry and Photobiology, 2021
- [Clinical evidence of the efficacy and safety of a new 3-in-1 anti-aging topical night serum-in-oil containing melatonin, bakuchiol, and ascorbyl tetraisopalmitate: 103 females treated from 28 to 84 days](https://pubmed.ncbi.nlm.nih.gov/30924254/) Tetrahexyldecyl ascorbate · Journal of Cosmetic Dermatology, 2019
- [A comparative study of gluconolactone versus benzoyl peroxide in the treatment of acne](https://pubmed.ncbi.nlm.nih.gov/1303072/) Gluconolactone · The Australasian Journal of Dermatology, 1992
- [Efficacy of a multitargeted, salicylic acid-based dermocosmetic cream compared to benzoyl peroxide 5% in Acne vulgaris: Results from a randomized study](https://pubmed.ncbi.nlm.nih.gov/37941097/) Salicylic acid · Journal of Cosmetic Dermatology, 2024
- [Evaluation of dermal extracellular matrix and epidermal-dermal junction modifications using matrix-assisted laser desorption/ionization mass spectrometric imaging, in vivo reflectance confocal microscopy, echography, and histology: effect of age and peptide applications](https://pubmed.ncbi.nlm.nih.gov/25817264/) Palmitoyl tripeptide-1, Palmitoyl tetrapeptide-7 · Journal of Cosmetic Dermatology, 2015
- [Comparison of clinical efficacies of sodium ascorbyl phosphate, retinol and their combination in acne treatment](https://pubmed.ncbi.nlm.nih.gov/19134126/) Sodium ascorbyl phosphate · International Journal of Cosmetic Science, 2009
- [A Lipid Mixture Enriched by Ceramide NP with Fatty Acids of Diverse Chain Lengths Contributes to Restore the Skin Barrier Function Impaired by Topical Corticosteroid](https://pubmed.ncbi.nlm.nih.gov/34348350/) Ceramide np · Skin Pharmacology and Physiology, 2022
- [Encapsulation of alpha arbutin, a depigmenting agent, in nanosized ethosomes: Invitro and invivo human studies](https://pubmed.ncbi.nlm.nih.gov/37681127/) Alpha-arbutin · Heliyon, 2023
- [A dermocosmetic containing bakuchiol, Ginkgo biloba extract and mannitol improves the efficacy of adapalene in patients with acne vulgaris: result from a controlled randomized trial](https://pubmed.ncbi.nlm.nih.gov/25914553/) Bakuchiol · Clinical, Cosmetic and Investigational Dermatology, 2015
- [Antioxidant-based topical formulations influence on the inflammatory response of Japanese skin: A clinical study using non-invasive techniques](https://pubmed.ncbi.nlm.nih.gov/28385617/) Tetrahexyldecyl ascorbate · European Journal of Pharmaceutics and Biopharmaceutics, 2017
- [A Salicylic Acid-Based Dermocosmetic is Effective as an Adjunct to Benzoyl Peroxide for Mild to Moderate Acne and as Monotherapy in Maintenance Post Benzoyl Peroxide](https://pubmed.ncbi.nlm.nih.gov/38051857/) Salicylic acid · Journal of Drugs in Dermatology, 2023
- [Evaluating the Safety and Efficacy of a Topical Formulation Containing Epidermal Growth Factor, Tranexamic Acid, Vitamin C, Arbutin, Niacinamide and Other Ingredients as Hydroquinone 4% Alternatives to Improve Hyperpigmentation: A Prospective, Randomized, Controlled Split Face Study](https://pubmed.ncbi.nlm.nih.gov/33022197/) Alpha arbutin · Journal of Cosmetic Science, 2020
- [Efficacy and Tolerability of Topical Nicotinamide Plus Antibacterial Adhesive Agents and Zinc-Pyrrolidone Carboxylic Acid Versus Placebo as an Adjuvant Treatment for Moderate Acne Vulgaris in Indonesia: A Multicenter, Double-blind, Randomized, Controlled Trial](https://pubmed.ncbi.nlm.nih.gov/32983333/) Zinc pca · The Journal of Clinical and Aesthetic Dermatology, 2020
- [Effects of 1,3-propanediol associated, or not, with butylene glycol and/or glycerol on skin hydration and skin barrier function](https://pubmed.ncbi.nlm.nih.gov/37699769/) Propanediol · International Journal of Cosmetic Science, 2024
- [Whitening effect of alpha-bisabolol in Asian women subjects](https://pubmed.ncbi.nlm.nih.gov/20642768/) Bisabolol · International Journal of Cosmetic Science, 2010
- [Assessment of Combined Ascorbyl Palmitate (AP) and Sodium Ascorbyl Phosphate (SAP) on Facial Skin Sebum Control in Female Healthy Volunteers](https://pubmed.ncbi.nlm.nih.gov/27756097/) Sodium ascorbyl phosphate · Drug Research, 2017
- [A clinical evaluation of the efficacy and tolerability of a novel topical antioxidant formulation featuring vitamin C, astaxanthin, and fermented turmeric](https://pubmed.ncbi.nlm.nih.gov/37608511/) Astaxanthin · Journal of Cosmetic Dermatology, 2023
- [Supramolecular collagen nanoparticles for anti-wrinkle, skin whitening, and moisturizing effects](https://pubmed.ncbi.nlm.nih.gov/39383579/) Palmitoyl tripeptide-5 · Colloids and Surfaces. B, Biointerfaces, 2025
- [Comparative physicochemical stability and clinical anti-wrinkle efficacy of transdermal emulgel preparations of 5% sodium ascorbyl phosphate and or ascorbic acid on human volunteers](https://pubmed.ncbi.nlm.nih.gov/32383548/) Sodium ascorbyl phosphate · Journal of Cosmetic Dermatology, 2021
- [Evaluation of the Efficacy and Safety of a Panthenol-Enriched Mask for Skin Barrier Recovery After Facial Laser Treatment: Results of a Double-Blind Randomized Controlled Study](https://pubmed.ncbi.nlm.nih.gov/40613435/) Panthenol · Journal of Cosmetic Dermatology, 2025
- [Preparation and characterization of astaxanthin-loaded biodegradable polyhydroxybutyrate (PHB) microbeads for personal care and cosmetic applications](https://pubmed.ncbi.nlm.nih.gov/38072340/) Astaxanthin · International Journal of Biological Macromolecules, 2024
- [Prospective randomized double-blind comparative study of topical acetyl zingerone with tetrahexyldecyl ascorbate versus tetrahexyldecyl ascorbate alone on facial photoaging](https://pubmed.ncbi.nlm.nih.gov/38525606/) Tetrahexyldecyl ascorbate · Journal of Cosmetic Dermatology, 2024
- [Clinical efficacy of facial masks containing yoghurt and Opuntia humifusa Raf. (F-YOP)](https://pubmed.ncbi.nlm.nih.gov/22152494/) Yogurt · Journal of Cosmetic Science, 2011
- [A Randomized Controlled Trial of the Genistein Plus Bakuchiol and Vitamins (GEN+) Product for Male Facial Skin: Effects on Skin Appearance and Properties](https://pubmed.ncbi.nlm.nih.gov/41562471/) Bakuchiol · Skin Research and Technology, 2026
- [Augmented Skin Beneficial Effects of Thermus Thermophilus and Bacillus Subtilis Mixed-Culture Ferment Extract by Tripeptide GHK-Cu](https://pubmed.ncbi.nlm.nih.gov/42573538/) Copper tripeptide-1 · Skin Research and Technology, 2026
- [Efficacy and safety of combination cream of stimu-tex AS™ (spent grain wax, Argania Spinosa Kernel oil, Butyrospermum Parkii (shea butter) extract), and saccharide isomerate after fractional CO2 laser procedure: split-face, double blinded, randomized controlled trial](https://pubmed.ncbi.nlm.nih.gov/41134387/) Argania spinosa kernel oil · Lasers in Medical Science, 2025
- [Targeting Circadian Rhythm for the Regulation of Skin Collagen Metabolism](https://pubmed.ncbi.nlm.nih.gov/41527525/) Palmitoyl tripeptide-1 · Journal of Cosmetic Dermatology, 2026
- [Mechanistic understanding and peptide ingredient screening for type III collagen via biological knowledge graph and molecular docking](https://pubmed.ncbi.nlm.nih.gov/42683869/) Palmitoyl tripeptide-1 · International Journal of Cosmetic Science, 2026
- [Prospective, Randomized, Double-Blind Assessment of Supramolecular Bakuchiol and Terminalia Chebula Extract for Facial Photoaging in Chinese Sensitive Skin Population](https://pubmed.ncbi.nlm.nih.gov/41424674/) Bakuchiol · Health Science Reports, 2025
- [Simmondsia chinensis (jojoba) cake fermentation: A new, sustainable technology for advanced skin and scalp care ingredients](https://pubmed.ncbi.nlm.nih.gov/42698229/) Lactobacillus ferment · International Journal of Cosmetic Science, 2026
- [Split-face evaluation: Gluconolactone plus oxybrasion versus gluconolactone plus microneedling. The effects on skin parameters](https://pubmed.ncbi.nlm.nih.gov/37357656/) Gluconolactone · Skin Research and Technology, 2023
- [Effects of a Greek Yoghurt-based Complex on the Human Facial Skin Microbiome](https://pubmed.ncbi.nlm.nih.gov/42049453/) Yogurt · In Vivo, 2026
- [Impact of dermal emulsions containing diacyl phospholipids, mono acyl phospholipids, sodium lauryl ether sulfate and polysorbate 80 in combination with UVA irradiation on human skin physiology in vivo: A pilot study](https://pubmed.ncbi.nlm.nih.gov/42617898/) Sodium laureth sulfate · International Journal of Pharmaceutics, 2026

## The brands

- Skincare: [Allies of Skin](https://lovi.care/skincare/fr/brands/allies-of-skin)
- Skincare: [Principia](https://lovi.care/skincare/fr/brands/principia)

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- [Some By Mi vs Allies of Skin](https://lovi.care/skincare/fr/compare/some-by-mi-vs-allies-of-skin)
- [Some By Mi vs Principia](https://lovi.care/skincare/fr/compare/some-by-mi-vs-principia)

## About the Lovi Fit

Lovi: Unbiased, science-based skincare AI trained on real user outcomes.

Lovi compares products by their fit scores, calculated from the full ingredient list with brand-independent rules its 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. Levels from best to worst: Superior, High, Average, Low, Caution, Warning.

Behind this comparison: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board).

Page built Nov 8, 2026.

More from Lovi: https://lovi.care/skincare/llms.txt

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