In vitroISO 23675
Double Plate: SPF without volunteers
The first ISO method to determine SPF entirely in vitro, using robotised application on two types of PMMA plate and spectrophotometric measurement.
More on this methodA centre of excellence in sunscreen testing
Elevate your sunscreen science
SPF and UVA studies to ISO standards for R&D and claims: in vivo, in vitro and hybrid. Fully traceable, with auditable reports and the backing of a leading scientific committee.
- studies completed
- 650+
- samples analysed
- 800+
- volunteer participations
- 2,000+
- ISO sunscreen methods
- 6
Quality
Quality, expertise and scientific rigour
ISO 9001 certified
SGS certification (ENAC-accredited) for clinical (in vivo) and in vitro safety and efficacy studies of cosmetic products.
External quality control
Participation in interlaboratory proficiency testing programmes (BIPEA).
- CEN · UNECTN 84/SC 2Cosmetic Products
International standardisation
Members of the CEN-UNE CTN 84/SC 2 Cosmetic Products committee, contributing to the ISO standardisation of SPF and UVA methods.
Pioneers in new methods
The new ISO methods, already in routine use
We combine established ISO methods with the new emerging methodologies, supporting both R&D and claims.
HybridISO 23698
HDRS: SPF, UVA-PF and CW in a single session
A hybrid method combining diffuse reflectance measured on volunteers’ skin with an in vitro measurement. It induces no erythema or pigmentation and is done in a single session.
More on this methodServices
From prototype to claim
- 01
SPF and UVA studies
Fast prototype screening to speed up formulation decisions, and full ISO studies for claims, with auditable reports.
- 02
Efficacy and consumer studies
Large-scale efficacy and consumer evaluation of products and prototypes, tailored to your needs.
- 03
Choosing the right method
We advise on the best approach for your objective, market, formulation and expected deliverable.
- 04
Technical defence and discrepancies
Support with audits, partners or regulators, and root-cause analysis when results conflict.
Methods
Testing to international standards
| Standard | Method | Type |
|---|---|---|
| ISO 24444 | In vivo determination of the sun protection factor (SPF) | In vivo |
| ISO 24442 | In vivo determination of sunscreen UVA protection | In vivo |
| ISO 24443 | Determination of sunscreen UVA photoprotection in vitro | In vitro |
| ISO 23675 | In vitro determination of SPF (Double Plate) | In vitroNew |
| ISO 23698 | Sunscreen efficacy by diffuse reflectance spectroscopy (HDRS) | HybridNew |
| ISO 16217 | Water immersion procedure for determining water resistance | In vivo |
Scientific committee
Advised by leading dermatologists
The committee oversees, advises on and takes part in result interpretation and methodological development.
Dra. Susana Puig
Director of IDIBAPS; Professor, University of Barcelona
Dr. Josep Malvehy
Director of the Skin Cancer (Melanoma) Programme, Hospital Clínic de Barcelona
Prof. Dr. Jean Krutmann
Director, IUF – Leibniz Research Institute for Environmental Medicine
Facilities
Barcelona, Les Corts
In vitro laboratory, rooms for in vivo and consumer studies, and a dermatology examination room, all under one roof in Barcelona.
About usNewsletter for laboratories
The Photoprotection Brief
A one-minute monthly read on SPF and UVA testing methods, with data from our laboratory. For R&D and regulatory teams.
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Tell us your product, claim, target market and timeline. We will propose the right study design and deliverables.