Quick Summary:
Date Tested: 06/11/2022
I love testing sunscreen. Why? Because I love finding products which defy my initial first impressions and surprise me. This is one of those products.
The Coola Sun Silk sunscreen packaging looks great (comes in a hefty glass bottle), but tests very poorly. “Coola?” Nah, its “Poola.”
The Sun Silk Creme reduced the UVI by 59.84%, reduced UVA by 60.16%, and reduced UVB intensity by 55.72%. Although the bottle touts all the marketable selling points that we look for when purchasing a sunscreen, it is very expensive and…it doesn’t perform well. PASS.
Sun Silk 70%+ organic SPF30 ingredients
Active Ingredients: ZINC OXIDE 15%
Inactive Ingredients: Aloe Barbadensis Leaf Juice, Butylene Glycol, Caprylyl Glycol, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Didecyldimonium Chloride, Dimethicone, Glyceryl Caprylate, Glyceryl Stearate Citrate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Jasminum Sambac Leaf Cell Extract, Methylpropanediol, Niacinamide, PEG-7 Trimethylolpropane Coconut Ether, Polyhydroxystearic Acid, Polyisobutene, Polyquaternium-80, Propanediol, Schinus Molle Extract, Theobroma Cacao (Cocoa) Seed Extract, Water
Manufacturers Website: www.coola.com
Mineral Sun Silk SPF30 characteristics at a glance:
- 70%+ certified organic ingredients
- Broad Spectrum UVA/UVB mineral protection
- Plant-derived BlueScreen™ Digital De-Stress™ technology helps mitigate the effects of blue light, HEV light, IR, and pollution
- Silky smooth finish layers well under makeup
- Oil-Free
- Fragrance-Free
- Dermatologist tested
- Non-comedogenic
- Non-Nano Zinc Oxide protection
- Vegan / Gluten-Free / Paraben-Free / Reef-Friendly*
- *Hawaii Reef Friendly Sunscreen Oxybenzone & Octinoxate Free
- Viscosity is strange. It dries powdery?
Prepared slide ready for testing
The Coola SPF30 looked pretty terrible once applied to the slide. It was completely unevenly distributed.
What’s worse…for the first time ever, I had to take a picture after the sample was tested just 2 hours afterwards because it looked even WORSE.
Slide after 2 hours of testing
After just 2 hours of testing the sample had really dried out around the outer edges of the sample, leaving only the Zinc Oxide active ingredient. This confirms my friends usage – she mentioned it leaves a weird dry film on the skin.
Mineral Sun Silk creme UV blocking test results
Ultraviolet light quick reference:
UVA: The Ultraviolet wavelength from 315nm – 400nm. The “Aging UV light” – Causes wrinkles.
UVB: The Ultraviolet wavelength from 280nm – 315nm. The “Bad UV light” – Causes skin cancer.
UVI: The global sun UV index. The more a sunscreen can reduce the level of UVI, the better.
Coola Sun Silk creme UV test results:
Ultraviolet sensor readings:
| Before Sunscreen | After Sunscreen | % UV Blocked | |
| TEMP | 87.85 | 88.16 | |
| UVA | 24831.5 | 9891.75 | 60.16% |
| UVB | 1240.5 | 549.25 | 55.72% |
| UVI | 14.53 | 5.84 | 59.84% |
Want to know more about how I test sunscreen? Head here to read about the details.
Testing notes:
The Coola SPF 30 Sun Silk Creme performed terribly and dried out during the 2 hour test. I cant imagine the sunscreen performing well in real world use. I can see it rubbing off easily, and providing very little protection…not to mention, it would probably look pretty bad on your skin. It is an expensive product, packaged very well, but just terrible in ultraviolet blocking ability. This is a product where slick marketing is trying to hide the poor performance of the product.
Don’t buy it. If you get it for free, don’t use it.
Want to try the Coola SPF 30?
This product looks nice but performs terrible. I do NOT recommend.
Disclosure: the Amazon link shown is the only affiliate link I am sharing on this post. I will earn a commission if you click on the amazon listed product link and place an order (at no cost to you). I do not collect any personally identifying information. Every little bit helps to keep this site up and running, I do appreciate it!
One thought on “Coola Mineral Sun Silk Creme SPF 30”