How to select a sunscreen? Chemical vs Physical SPF (Sunscreen Guide)

Sunscreen Guide Chemical vs Physical Sunscreen — How to pick a sunscreen? - Malin & Goetz Image

We all know that sunscreen is a MUST, but let's discuss the differences between chemical and physical (aka mineral) spf.

I often get asked what the best type of sunscreen is, and while I hate giving this answer, the truth is that it truly just depends. The differences between chemical sunscreen and physical sunscreen lie in their ingredients, mechanism of action, skin feel, and potential irritation.

Different skin types and skin concerns have different needs. People also tend to have personal preferences and choose to factor things - like environmental impact - into their purchasing decisions, so let's break it down.

My advice on selecting a sunscreen: Regardless of what type sunscreen you choose, make sure you choose a product that is "Broad Spectrum " which means that it will protect you from both UVA (aging rays) and UVB (burning rays). Try as many SPFs as you need to find one that you genuinely love wearing every single day. There are SO many options on the market.

Let's break down the differences:

INGREDIENTS

CHEMICAL SUNSCREEN	PHYSICAL SUNSCREEN
Carbon based compounds like avobenzone, oxybenzone, octinoxate, and octocrylene.	Mineral-based ingredients like zinc oxide and titanium dioxide.

HOW THEY WORK

CHEMICAL SUNSCREEN	PHYSICAL SUNSCREEN
Absorbs UV rays and converts them into heat, which is then released from the skin. Some studies state that the absorption of UV rays can worsen dark spots and hyperpigmentation.	Sits on the surface of the skin and reflects or scatters UV rays away from the skin.

Physical vs Chemical Sunscreen Diagram — Physical vs Chemical Sunscreen

APPLICATION AND FEEL

CHEMICAL SUNSCREEN	PHYSICAL SUNSCREEN
Often thinner and easier to rub in without leaving a white cast, making it more suitable for daily use and makeup layering.	Thicker in consistency and can leave a white cast, especially on deeper skin tones, but newer formulations have improved this aspect. HUGE strides have been made specifically in tinted sunscreens that embrace a wide range of skin tones.

IRRITATION & SENSITIVITY

CHEMICAL SUNSCREEN	PHYSICAL SUNSCREEN
Can be more irritating, especially for sensitive or acne-prone skin, as some ingredients may cause stinging or allergic reactions.	Generally less irritating and is often recommended for sensitive skin types, including those with conditions like rosacea or eczema.

ENVIRONMENTAL IMPACT

CHEMICAL SUNSCREEN	PHYSICAL SUNSCREEN
Some chemical ingredients like oxybenzone and octinoxate have been shown to harm coral reefs and marine life. Keep an eye out for words like "reef safe" to avoid polluting our oceans!	Considered more environmentally friendly and safer for marine ecosystems.