SkinCeuticals Ultimate UV Defense SPF 30

Formula review

Effectiveness
Efficacy
90 /100
Can work for:
  • Sun protection
  • Evens skin tone
  • Moisturizing
Promises, but can't deliver:
All promises can be fulfilled by this formula at least in theory
WIMJ summary

This product offers a good level of protection against both UVB and UVA rays.

This sunscreen uses organic sunscreen filters. Organic fitlers usually provide reliable sun protection and rarely leave a white cast. Sunscreens with organic filters can sting eyes.

Organic filters
Ingredient UVB UVA I UVA II Stability
ethylhexyl methoxycinnamate
Offers UVB protection
Does not offer UVA I protection
Does not offer UVA II protection
Is photo stable
Non-organic (mineral) filters
Ingredient UVB UVA I UVA II Stability
zinc oxide
Offers UVB protection
Offers UVA I protection
Offers UVA II protection
Is photo stable
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WIMJ summary

This product offers broad spectrum sun protection. It means that it can prevent hyperpigmentation and help keep the skin tone even (sun damage is the main factor causing age spots, darkening of post-acne marks and other discolorations).

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Promise
What does the product description say?
"Cosmetically elegant and moisturizing, this sunscreen is ideal for daily use and high-altitude climates."
WIMJ summary

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. The following ingredients in this product do the job: cyclomethicone, glycerin.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: beeswax, copernicia cerifera wax.

Ingredient Effectiveness Concentration Irritancy
HIGH
meets threshold
Effectiveness
HIGH
meets threshold
Effectiveness
HIGH
meets threshold
Effectiveness

Potential irritants

Effectiveness
irritancy
LOW

Ingredients by volume

Octinoxate. When used in higher concentrations, works as a sunscreen protecting the skin from UVB rays. When used in lower concentration, helps to preserve the product formulation. Is shown to be harmful to coral reefs - consider avoiding bathing in coral reef areas when wearing a product with this ingredient. It can be irritating
A broad spectrum sunblock (protects from both UVA and UVB rays). Is suitable for most sensitive skins. In small concentrations, can be used as a colorant

Questions

Scientific Sources