• 0 £0.00
    You have no items in your shopping cart.

Product Testing


Sunscreen – SPF (UVA & UVB Protection)

jane iredale conducts extensive testing of its sunscreen products to determine their efficacy in terms of UVA and UVB protection in compliance with both US FDA (Food and Drug Administration) and international requirements and testing methodologies. 


jane iredale sunscreen products have always had excellent UVA and UVB protection and pass the new US FDA final sunscreen rule “Broad Spectrum” test which measures a product’s UVA protection in relation to its UVB protection. 

Only sunscreen products that pass the Broad Spectrum test and have an SPF of greater than 15 may be labeled “Broad Spectrum” and make the additional use claims: “decreases the risk of skin cancer and early skin aging if used as directed with other sun protection measures.”

jane iredale sunscreen products have also been tested for their water resistancy pursuant to the new final rule which only allows “Water Resistance” claims if the sunscreen remains effective for 40 or 80 minutes while swimming or sweating. The new testing techniques have resulted in a 40-minute designation for all of our sunscreen products.


jane iredale sunscreen products are also tested pursuant to various international requirements, testing methodologies and rating systems, including those established in the EU (European Union) and by the JCIA (Japan Cosmetic Industry Association). 

Our testing pursuant to EU requirements has resulted in a “UVA/UVB” claim which indicates that the UVA and UVB protection of the sunscreen are provided in a minimum 1 to 3 ratio. So, for example, a product with a UVB SPF of 30 requires a UVA rating of 10.

The JCIA PA rating system (also known as the “Protection Grade of UVA” rating system) reflects a sunscreen's ability to protect against UVA rays. The PA rating system designates a PA+, PA++, PA+++ to indicate lowest to highest UVA protection. The more plus symbols the label has, the more protection the sunscreen provides against UVA rays. Our testing pursuant to the PA rating system has resulted in a PA+++ rating for our Powder-Me SPF and a PA++ rating for all of our other sunscreens.


This is an in vitro test conducted with light rays to determine the percentage of active ingredients. It is required by some countries in order to register products claiming an SPF. The light rays measure the absorption and reflection of light in order to confirm the percentage of actives, in our case titanium dioxide and zinc oxide. It is an uncertain test but an interesting one. For example, the analysis of the test we just conducted on Warm Silk indicated an SPF 37.


This measures shelf life. The product can be tested in real time, provided the product has been in the line long enough, or it can be measured through an incubation process. This subjects the product to intense heat and cold for a period of one month. This acceleration is equal to one year. All of our products have undergone this test and where possible, the real time test. 

PAO (Period After Opening)

It is now a requirement of the EU that all boxes and labels contain the symbol of an open jar with the number of months the consumer can expect to use the product at its optimal performance. This is a subjective test with no defining rules. However, the object is to be able to convince regulatory authorities that the manufacturer can back-up the period it advertises. We sent to the laboratory powder bases that we have had in our makeup room for four years or longer and that have been used periodically during that time. We tested five pressed powders and three loose powders. In every case, there were no microorganisms. We could back up a 48 month PAO, but have decided to print 24M (24 months) on the box. We have been advised to choose a lesser time so that it doesn’t appear out of place to the customs authorities. All other products, except D20, Balance and POMMISST have a PAO of 12 months. We firmly believe that all our mineral powders have an indefinite PAO.


We are printing a “Best used by…” date on D20™, Balance and POMMISST™ Hydration Sprays. Date will be one year from filling. This doesn’t mean that the product is harmful after that date but that it is optimum during the first year. If any change is discernible, it would be in the lessening of the fragrance.


This is a sensitivity test conducted on 50 people per product. This is two-phase test which tests irritancy and sensitivity. During the first phase, the test is repeated three times on the same subject within a week. There is a ten to fourteen day break and then the subject is patch-tested for three consecutive days. There is a 24-hour evaluation and 48-hour evaluation. In every case, the results of being tested with our products were negative. No sensitivity was recorded to any of the products. The legitimate claims we can now make are: Dermatologist Tested. Non-irritating. Safety Tested. Allergy Tested. Clinically Tested. Hypoallergenic.

PET (CHALLENGE TEST) This test proves the efficacy of the preservative system. We were particularly interested in the results because of our insistence on using systems that don’t rely on parabens and phenoxyethanol but rely on more natural methods. In a laboratory, bacteria, yeast and mold were introduced into the product:


Staphylococcus aureus
Staphylococcus epidermidis
Pseudomoas aeruginosa
Pseudomonas putida
Escerichia coli
Enterobacter aerogenes
Proteus vulgaris
Serratia marcescens

Saccharomices cerevistae
Candida albicans

Aspergillus niger
Aspergillus flavus
Pennicillium notatum
Staphylococcus epidermidis, Pseudomoas aeruginosa and Escerichia coli (E. coli) were introduced a second and third time after allowing seven days of incubation. The test allows the evaluation of the real capacity of the preservative system of not only preventing microbial contamination but of also reducing it to a level that is safe for human health. In other words, the preservative system has to be able to kill the organisms. When the test was finished (21 days) no microbial activity was detectible.


jane iredale products are certified cruelty-free by PETA. To find out more about what this means, please visit our page on their site.


All of our products, except for lip and eye make-up, have undergone comedogenicity testing and shown to be non-comedogenic. Non-comedogenic products are less likely to clog pores and cause acne and are more suitable for sensitive skin.


We have conducted heavy metal tests on all products. There is no measurable amount of heavy metals in any product including lead and mercury.


jane iredale has conducted tests not required as a cosmetic manufacturer, but it has done so because it believes in offering you the highest quality product line possible.