Sunscreen is essential to protect us against the harmful effects of UV radiation. However, not all sunscreens are created equal. They come in various formulations, benefits, and disadvantages. This blog explains you the different types of sunscreen, how they work and most important: whether they leave a white cast on your skin.
TYPES OF SUNSCREEN
There are 3 types of sunscreen:
- Mineral / physical Sunscreen
- Chemical Sunscreen
- Hybrid Sunscreen
1. Mineral sunscreen (also known as physical sunscreen)
Physical sunscreens use minerals like zinc oxide and titanium dioxide to create a physical barrier on the skin. This barrier prevents UV rays from penetrating the skin by reflecting and scattering them.
Pros:
- Provides broad-spectrum protection.
- Effective immediately upon application.
- Less likely to cause skin irritation.
Cons:
- Thicker texture can feel heavier on the skin.
- More likely to leave a white cast, especially on darker skin tones.
- Can be less water-resistant.
Does this leave a white cast? Physical sunscreens are notorious for leaving a white cast due to the mineral particles.
2. Chemical sunscreen
Chemical sunscreens do not form a physical barrier on the skin. Instead, they contain ingredients that absorb UV rays, before the UV rays have the time to be absorbed by the skin. Through a chemical process, the UV-rays are then converted into non-damaging heat and released from the skin. Used ingredients are for example avobenzone, octinoxate, and oxybenzone.
Pros:
- Lightweight and easy to apply.
- Absorbs quickly into the skin without leaving a residue.
- Often more water-resistant than physical sunscreens.
Cons:
- Can cause irritation, especially for sensitive skin.
- Requires about 20 minutes to become effective after application.
- Some ingredients, like oxybenzone, have raised environmental and health concerns.
Does this leave a white cast? Chemical sunscreens generally do not leave a white cast, making them a popular choice for people with skin of colour.
3. Hybrid sunscreen
Hybrid sunscreens combine both chemical and physical UV filters, aiming to offer the best of both worlds.
Pros:
- Balanced UV protection.
- Lightweight and comfortable on the skin.
- Often formulated to minimize the white cast.
Cons:
- Can still cause irritation due to chemical components.
- More expensive than purely chemical or physical sunscreens.
Does this leave a white cast? Many hybrid sunscreens are designed to minimize the white cast, making them a good option for those with darker skin tones who seek comprehensive protection.
CONCLUSION
Choosing the right sunscreen involves understanding your skin type, preferences, and concerns. For those with darker skin tones, avoiding a white cast is a key consideration. Chemical sunscreens are generally the best at preventing this. Always look for broad-spectrum protection to shield your skin from both UVA and UVB rays, and remember to reapply regularly, especially after swimming or sweating.
Read more: 'Sun protection for skin of colour: most asked question answered'