Martina Williams, Jane Iredale educator, gives the low-down on chemical and physical sunscreen.
• Physical sunscreen uses 2 ingredients; Zinc Oxide and Titanium Dioxide, together they act as a physical shield and deflect and reflect the sun’s rays.
• Chemical sunscreens rely on chemicals like Octylcrylene, Avobenzone, Octinoxate, and up to a dozen other chemical filters to absorb the UV rays your skin is exposed to. These chemical filters can generate free radical damage which can cause skin damage, irritation and ageing to the skin.
• Physical sunscreen starts protecting immediately upon application, there is no wait time.
• Chemical sunscreen requires at least 20 minutes before sun protection is effective.
• Benefit of physical sunscreen is that they don’t decompose through sun exposure, so they theoretically have a longer life on the skin.
• Chemical sunscreens can start to decompose in the presence of UV rays and lose effectiveness, therefore they must be applied continuously.
• Physical sunscreens are less likely to cause irritation and sensitivities and are a better choice for sensitive skins as they do not penetrate the skin.
• Chemical filters found in chemical sunscreens tend to be more irritating to sensitive and acne prone skin as these chemicals are absorbed.
• A number of studies indicate that because chemical sunscreens penetrate the skin, these chemicals are absorbed into the blood stream and may be harmful to the body.
Martina Williams is the Jane Iredale educator for Victoria.
For more information visit https://janeiredale.com/au/en.htm