# ISDIN vs Principia

Page: https://lovi.care/skincare/uk/compare/isdin-vs-principia

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

ISDIN and Principia are two skincare brands offering targeted solutions for diverse complexions. The Spanish house is beloved for its sophisticated moisturizers, advanced sunscreens, targeted [serums](https://lovi.care/skincare/uk/ingredients/serum), and soothing eye products driven by meticulously crafted formulas, while the other is widely loved for thoughtful cleansers and precise formulas. The former suits sensitive skin and dry skin best, featuring standout solutions like Fusion [Water](https://lovi.care/skincare/uk/ingredients/water) for acne-prone skin, Eryfotona Actinica for skin with dark spots, and K-Ox Eyes for mature skin, whereas the latter suits balanced to oily skin best, highlighting the Gel de Limpeza GL-01 for acne-prone skin. Both brands differ in their core formulations and specific target concerns, yet consistently support daily skin health and comfort.

ISDIN is a Spanish skincare brand founded in 1975 and owned by Puig.

[puig.com](https://www.puig.com/en/newsroom/new-chapter-for-Isdin-Puig-to-assume-full-ownership/) [beautymatter.com](https://beautymatter.com/articles/puig-to-take-full-ownership-of-isdin-in-1-39-billion-deal) [uploads.puig.com](https://uploads.puig.com/uploads/Puig_NP_Sept_14_EN_fc21e2f47a.pdf)

This page compares some of the most popular ISDIN 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=pg804125f9c4).

### Popular ISDIN vs Principia products

#### ISDIN

- [Eryfotona Actinica](https://lovi.care/skincare/uk/p/isdin/eryfotona-actinica/for/mature-skin) — Superior fit — [£29.20 at Amazon](https://www.amazon.co.uk/dp/B00D3HXWCK?tag=lovi-care-web-product-21&linkCode=osi&th=1&psc=1)
- [Fusion Water](https://lovi.care/skincare/uk/p/isdin/fusion-water/for/dry-sensitive-skin) — Superior fit — [£23.49 at Amazon](https://www.amazon.co.uk/dp/B00Z72U6JQ?tag=lovi-care-web-product-21&linkCode=osi&th=1&psc=1)
- [K-Ox Eyes](https://lovi.care/skincare/uk/p/isdin/k-ox-eyes/for/dry-skin) — High fit
- [Hyaluronic Concentrate](https://lovi.care/skincare/uk/p/isdin/hyaluronic-concentrate/for/sensitive-skin) — High fit
- [Hyaluronic Moisture](https://lovi.care/skincare/uk/p/isdin/hyaluronic-moisture/for/dry-sensitive-skin) — Average fit
- [Flavo-C Serum](https://lovi.care/skincare/uk/p/isdin/flavo-c-serum/for/sensitive-skin) — High fit — [£38.90 at Amazon](https://www.amazon.co.uk/dp/B01BMLQ086?tag=lovi-care-web-product-21&linkCode=osi&th=1&psc=1)
- [Uradin Lotion 10](https://lovi.care/skincare/uk/p/isdin/uradin-lotion-10/for/dry-skin) — High fit
- [Retinal Intense Serum](https://lovi.care/skincare/uk/p/isdin/retinal-intense-serum/for/acne-prone-skin) — High fit — [£71.32 at Amazon](https://www.amazon.co.uk/dp/B0BD9DK6SC?tag=lovi-care-web-product-21&linkCode=osi&th=1&psc=1)

#### Principia

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

## Questions and answers

### ISDIN or Principia: which is better?

ISDIN is the better choice for most shoppers on this page, as the products on this page offer a Superior fit for sensitive and dry skin types. Reviewers often mention its ultralight sunscreens, though some note a high price point.

### What is the difference between ISDIN and Principia?

ISDIN offers a much larger variety of products on this page across categories like sunscreens, moisturizers, and [serums](https://lovi.care/skincare/uk/ingredients/serum), whereas Principia only features a single cleanser. Lovi rates ISDIN with superior and high fit levels for several skin types like sensitive and dry skin, while the Principia cleanser achieves average fits for oily skin and low or caution fits for dry skin.

### Which is more affordable, ISDIN or Principia?

Reviews often mention that ISDIN has a high price point, whereas the products on this page for Principia include a cleanser.

### Which causes fewer breakouts, ISDIN or Principia?

Neither brand as a whole stands out for causing fewer breakouts, but ISDIN has several specific products on this page rated High for acne-prone skin while Principia offers only one cleanser. ISDIN sunscreens and serums help many shoppers with breakouts, though some products may cause irritation due to strong fragrance.

### Which brand was founded earlier, ISDIN or Principia?

ISDIN was founded in 1975, whereas Principia was founded more recently in 2020.

### How do the fragrance profiles of ISDIN and Principia products compare based on their ingredients?

ISDIN products on this page often include fragrance, with five out of eight products listing it in their ingredients, whereas every Principia product lists no fragrance.

### Which skincare brand has more products listed on the page, ISDIN or Principia?

ISDIN has more products listed on the page than Principia, offering eight items compared to Principia's single cleanser. Reviewers often mention that ISDIN's sunscreens are ultralight and skin-friendly.

## Research behind their key ingredients

- [Skin delivery of epigallocatechin-3-gallate (EGCG) and hyaluronic acid loaded nano-transfersomes for antioxidant and anti-aging effects in UV radiation induced skin damage](https://pubmed.ncbi.nlm.nih.gov/28155509/) Antioxidants · Drug Delivery, 2017
- [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/) Sodium hyaluronate, Hyaluronic acid · Dermatologic Therapy, 2022
- [Topical use of dexpanthenol in skin disorders](https://pubmed.ncbi.nlm.nih.gov/12113650/) Panthenol · American Journal of Clinical Dermatology, 2002
- [Anti-aging and brightening effects of a topical treatment containing vitamin C, vitamin E, and raspberry leaf cell culture extract: A split-face, randomized controlled trial](https://pubmed.ncbi.nlm.nih.gov/31975502/) Ascorbic acid, Tocopherol · Journal of Cosmetic Dermatology, 2020
- [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
- [Antiaging efficacy of melatonin-based day and night creams: a randomized, split-face, assessor-blinded proof-of-concept trial](https://pubmed.ncbi.nlm.nih.gov/29416368/) Melatonin · Clinical, Cosmetic and Investigational Dermatology, 2018
- [Effect of a topical antioxidant serum containing vitamin C, vitamin E, and ferulic acid after Q-switched 1064-nm Nd:YAG laser for treatment of environment-induced skin pigmentation](https://pubmed.ncbi.nlm.nih.gov/32052907/) Ascorbic acid · Journal of Cosmetic Dermatology, 2020
- [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
- [Stable Ozonides with Vitamin E Acetate versus Corticosteroid in the Treatment of Lichen Sclerosus in Foreskin: Evaluation of Effects on Inflammation](https://pubmed.ncbi.nlm.nih.gov/30991399/) Tocopheryl acetate · Urologia Internationalis, 2019
- [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
- [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
- [Biomimetic hyaluronic acid-stabilized zinc oxide nanoparticles in acne treatment: A preclinical and clinical approach](https://pubmed.ncbi.nlm.nih.gov/40254135/) Zinc oxide · Journal of Controlled Release, 2025
- [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
- [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
- [Botulinum toxin injection as a single or combined treatment with non-cross-linked high molecular weight and low molecular weight hyaluronic acid gel for neck rejuvenation: A randomized clinical trial](https://pubmed.ncbi.nlm.nih.gov/35775872/) Hydrolyzed hyaluronic acid · Dermatologic Therapy, 2022
- [Comparison of methods for assessing photoprotection against ultraviolet A in vivo](https://pubmed.ncbi.nlm.nih.gov/3819071/) Butyl methoxydibenzoylmethane · Journal of the American Academy of Dermatology, 1987
- [Using ordered mesoporous silica SBA-15 to limit cutaneous penetration and transdermal permeation of organic UV filters](https://pubmed.ncbi.nlm.nih.gov/31437563/) Butyl methoxydibenzoylmethane · International Journal of Pharmaceutics, 2019
- [Topical Zinc Oxide Nanoparticle Formulations for Acne Vulgaris: A Systematic Review of Pre-Clinical and Early-Phase Clinical Evidence](https://pubmed.ncbi.nlm.nih.gov/41007718/) Zinc oxide · Biomedicines, 2025
- [Influence of vitamin E acetate on stratum corneum hydration](https://pubmed.ncbi.nlm.nih.gov/9706379/) Tocopheryl acetate · Arzneimittel-Forschung, 1998
- [Enhancing Photoprotection and Mitigating Ex Vivo Stratum Corneum Oxidative Stress: A Multifunctional Strategy Combining Rosmarinic Acid with UVB Filters](https://pubmed.ncbi.nlm.nih.gov/40227214/) Octocrylene · Antioxidants, 2025
- [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
- [TiO2-embedded mesoporous silica with lower porosity is beneficial to adsorb the pollutants and retard UV filter absorption: A possible application for outdoor skin protection](https://pubmed.ncbi.nlm.nih.gov/36455708/) Butyl methoxydibenzoylmethane · European Journal of Pharmaceutical Sciences, 2023
- [Efficacy and Tolerability of Stable Hybrid Cooperative Complexes of High- and Low-Molecular Weight Hyaluronic Acid in Asian Patients: An Open-Label Study](https://pubmed.ncbi.nlm.nih.gov/40921777/) Hydrolyzed hyaluronic acid · Aesthetic Plastic Surgery, 2026
- [Ginkgo biloba leaves extract's cosmeceutical evaluation: a preliminary assessments on human volunteers towards achieving improved skin condition and rejuvenation](https://pubmed.ncbi.nlm.nih.gov/37074796/) Ginkgo biloba leaf extract · Drug Development and Industrial Pharmacy, 2023
- [Nanostructured Lipid Carrier Based Gel Containing α-Tocopherol and α-Tocopheryl Acetate for Synergistic Cutaneous Antiaging Efficacy](https://pubmed.ncbi.nlm.nih.gov/41309687/) Tocopheryl acetate · Scientific Reports, 2025
- [Nanocomplex of quaternized cyclodextrin grafted chitosan and hyaluronic acid for a skin delivery](https://pubmed.ncbi.nlm.nih.gov/36279763/) Hydrolyzed hyaluronic acid · Colloids and Surfaces. B, Biointerfaces, 2022
- [Effect of an Emollient Emulsion Containing 15.0% of Caprylic/Capric Triglyceride on the Urocanic Acid of the Stratum Corneum](https://pubmed.ncbi.nlm.nih.gov/37109405/) Caprylic capric triglyceride · Life, 2023
- [Safety assessment on comedogenicity of dermatological products containing d-alpha tocopheryl acetate in Asian subjects: A double-blind randomized controlled trial](https://pubmed.ncbi.nlm.nih.gov/34471722/) Tocopheryl acetate · Contemporary Clinical Trials Communications, 2021
- [Facial disbiosis and UV filters](https://pubmed.ncbi.nlm.nih.gov/39499337/) Ethylhexyl salicylate · Archives of Dermatological Research, 2024
- [The clinical efficacy of a new emulsion for acne and conspicuous facial pore amelioration](https://pubmed.ncbi.nlm.nih.gov/38140770/) Lens esculenta seed extract · Journal of Cosmetic Dermatology, 2024
- [Retrospective Review of Dermal Safety Studies of Organic Sunscreens](https://pubmed.ncbi.nlm.nih.gov/40911743/) Ethylhexyl salicylate · Journal of Drugs in Dermatology, 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, Palmitoyl tetrapeptide-7 · 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
- [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

- Spanish skincare: [ISDIN](https://lovi.care/skincare/uk/brands/isdin)
- Skincare: [Principia](https://lovi.care/skincare/uk/brands/principia)

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- [La Roche-Posay vs ISDIN](https://lovi.care/skincare/uk/compare/la-roche-posay-vs-isdin)
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## 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

## This page in other countries

- United States: https://lovi.care/skincare/compare/isdin-vs-principia
- United Kingdom: https://lovi.care/skincare/uk/compare/isdin-vs-principia (this page)
- Ireland: https://lovi.care/skincare/ie/compare/isdin-vs-principia
- Germany: https://lovi.care/skincare/de/compare/isdin-vs-principia
- France: https://lovi.care/skincare/fr/compare/isdin-vs-principia
- Italy: https://lovi.care/skincare/it/compare/isdin-vs-principia
- Netherlands: https://lovi.care/skincare/nl/compare/isdin-vs-principia
- Spain: https://lovi.care/skincare/es/compare/isdin-vs-principia
- Canada: https://lovi.care/skincare/ca/compare/isdin-vs-principia
- Australia: https://lovi.care/skincare/au/compare/isdin-vs-principia
- Singapore: https://lovi.care/skincare/sg/compare/isdin-vs-principia
- Saudi Arabia: https://lovi.care/skincare/sa/compare/isdin-vs-principia
- United Arab Emirates: https://lovi.care/skincare/ae/compare/isdin-vs-principia