Physical vs Chemical Sunscreen

Sunscreen is one of the most important steps you can take to maintain the health and beauty of your skin. Those under 30, listen up, because sun protection is the best way to prevent ageing. To those older than 30, sunscreen should remain a lifelong habit to slow ageing and prevent sun damage and disease.

And despite it not being summer anymore, sunscreen should still be vital to skincare routine. If I have learnt anything from writing this blog it is that skincare is hella confusing and sunscreen is no different. There is a lot of opposing information about it, especially what types and which is better. So, this week I want to talk about the difference between mineral/physical and chemical sunscreen.

What Are Physical Sunscreens?

Notes; also referred to as mineral or natural sunscreens.

Picture the classic lifeguard or surfer with a thick white paste on their nose—that’s is physical sunscreen in its cruder form. But day to day physical sunscreens have come a long way since the iconic thick white sunscreen. So, what actually is physical sunscreen?

According to skin experts physical sunscreens are fine particles of minerals – commonly titanium dioxide and zinc oxide – that sit on the surface of the skin and reflect and scatter damaging UVA and UVB rays away from the skin.

THE PROS

- according to dermatologists’ physical sunscreens are less likely to clog pores.

- it is easy to see where physical sunscreens have been applied and when they have rubbed off.

- less irritating for sensitive skin than certain chemical filters.

- gives that glowy dewy look to the skin

- block a wide range of UV rays

THE CONS

- often heavier and thicker on the skin

- not the best choice for oily/acne-prone skin

- mineral actives alone often offer less protection from damaging UVA radiation than chemical filters.

- can leave the dreaded white cast on the skin – making darker skin tones look ashy.

- can rub or sweat off easily

Physical sunscreens have come a long way from their cakey, white, hard-to-spread predecessors. There are now many brands making physical sunscreens that are easy to apply and blend into the skin. Physical sunscreens are generally more natural (made without harsh chemicals and alcohols) and are ideal for sensitive skin. Due to the thickness of this type of sunscreen, people with oily and acne-prone need to remove it thoroughly to avoid problems. Otherwise, physical sunscreen is a safe choice. I personally love ‘The Kind Sunscreen’ and ‘Basking Beauty Natural Sunscreen SPF50’ products as they include Vitamin E and Oils to nourish the skin while also providing sun protection.

What Are Chemical Sunscreens?

Chemical sunscreens contain organic (carbon-based) compounds that protect the skin by absorbing and changing UV rays into heat, then releasing that heat from the skin. Compound formulas can have multiple filters to give broad-spectrum protection (UVB and UVA).

They tend to be thinner and absorbable than their physical cousins. Most of the pharmacy sunscreens are chemical (also known as organic) category.

THE PROS

- highly effective protection without necessarily needing to be in high concentrations.

- lightweight, non-sticky, spread easily

- no white cast

- can be formulated to block a wide range of UV rays

- better for oily skin types

THE CONS

- can cause allergic reactions and irritation in sensitive skin.

- concerns over potential free radical damage from long-term use.

o But… most modern formulas contain antioxidants counteract this; such as vitamins C and E.

I personally cannot use chemical sunscreens due to the fact that my skin reacts to it. However, many of my oily skin and darker skin friends love chemical sunscreens because it is non-oily and non-white cast. Chemical sunscreens have a bad reputation for containing oxybenzone, which has been linked to allergies, hormone disruption (estrogenic), and cell damage, but according to dermatologists, brands have come a long way and there are formulas that are free of this ingredient and remain just as effective.

Quick Tip: You can determine the type of sunscreen by looking at the consistency and packaging. Chemical sunscreens are typically less thick and more transparent, while physical sunscreens will list zinc oxide, titanium dioxide, or mineral on the packaging and are much thicker.

So, which one is best… for you?

When it comes to acne/oily-prone skin, the type of sunscreen you choose can make a difference. "Two things can cause sunscreen-related breakouts: occlusion of the pores by comedogenic materials or a sensitivity reaction to chemical UV-blocking ingredients," If this is the case then physical sunscreens is recommended. But also note that breakouts can commonly be caused by other ingredients, such as fragrances and preservatives. Pro-tip is to search for 'non-comedogenic' on the label (Zinc oxide and titanium dioxide are both typically viewed as non-comedogenic.). If you really hate physical sunscreens because they often add an oily sort of look, then chemical ones are a great choice too. Just make use you get a good one, without oxybenzone, and with antioxidants. With both physical and chemical make sure to remove at night to avoid breakouts.

For dry and sensitive skin types, I would recommend physical sunscreens. This is because Zinc is a non-irritating ingredient that can calm redness and natural physical sunscreens often include other hydrating products like oils and vitamin E to hydrate the skin. Sensitive skin will more often than not react to chemical sunscreen, so best to stay clear x

Combination and normal skin types really have the luck of the draw, so just choose what sort of sunscreen you prefer (AKA, feeling, thickness, ect.)

Also, for some people with darker skin types it can be difficult to find a physical sunscreen that doesn't leave an ashy look. Chemical sunscreens will be easier in this regard, but there are physical sunscreens, particularly tinted ones, that would be great.

The Takeaway

Ultimately, the best sunscreen is one that you enjoy wearing daily and is compatible with your skin type. The bottom line is to wear whatever kind of sunscreen actually gets you to wear sunscreen.