How to Use Sunscreen(it’s not as simple as you think!) baby skin careNov 20, 2025 Share Nothing says summer in Aotearoa like a sizzling BBQ, backyard cricket, and that distinctive whiff of sunscreen. Whether you’ve grown up in NZ or you’re just here to visit, you should know that sunscreen and the Kiwi summer go together like Christmas and pavlova. Our ultraviolet light (UV) levels are among the highest in the world - partly due to our proximity to the ozone ‘hole’ over Antarctica and our lack of pollution, which allows more UV radiation in. Add in our love of the outdoors - especially the beach - and it’s no surprise New Zealand has some of the highest rates of skin cancer in the world. Around one in 15 Kiwis will develop melanoma in their lifetime. Sunscreen is your first line of defence against skin cancer - and the lobster look (which is definitely not a good look!). Here’s what you need to know about choosing a sunscreen, how much sunscreen to use, and when. How to use sunscreen Yes, there’s a right way and a wrong way! Shake it up! As with any cream-based product, sunscreen can clump inside the bottle. Shaking thoroughly helps to keep the product smooth and consistent. Be generous. The average adult will need about 35ml (seven teaspoons, or about a shot-glass full) of sunscreen lotion to cover their whole body. That’s one teaspoon for your face, neck, and ears; one teaspoon for each arm and leg, and the rest to your chest, back, torso, and anywhere else exposed to the sun. Spot, don’t squirt. Applying small dots of product to each body part helps to ensure even coverage. Plan ahead! Sunscreen should be applied at least 20 minutes before going outdoors (preferably not when you’re already sitting on the beach!) Don’t rub. Smooth it gently and evenly rather than rubbing vigorously. Research suggests that too much friction can disrupt the protective film that sunscreen creates on your skin, potentially reducing its sun protection factor (SPF). Once isn’t enough. Remember to reapply every two hours, and after showering or swimming. When to use sunscreen In summer, Kiwis are advised to wear sunscreen between 11am to 3.30pm or when UV levels are 3 or higher. You can check the Sun Protection Alert between September to April on the MetService website and/or the app. But it’s also important to apply sunscreen on cloudy days or when you’re around surfaces that reflect UV rays, such as water, snow, ice, or sand. Types of sunscreen Chemical sunscreens These sunscreens contain organic compounds that absorb UV radiation then convert it into a small amount of heat that is released from the skin. These products are usually designed to protect against both UVA and UVB rays. Common ingredients include oxybenzone, octocrylene, homosalate, and Padimate O. Stable agents like octocrylene, bemotrizinol, and bisoctrizole are often added to improve durability. Mineral sunscreens These products contain zinc oxide or titanium dioxide, which work by reflecting and scattering UVA and UVB rays. Many mineral sunscreen products now use ultrafine ‘nanoparticles’ for smoother application and less residue. These have been confirmed as safe for topical application by regulatory bodies such as the Scientific Committee on Consumer Safety (SCCS). How to choose the right sunscreen for yourself and your family There is no one best sunscreen. The right sunscreen for you depends on your skin type, lifestyle, budget, and personal preferences. For families, consider the ages of your kids and whether they have any skin conditions or sensitivities. Skin type Sensitive or acne-prone skin: Mineral sunscreens with zinc oxide or titanium dioxide tend to be gentler on the skin, and less likely to cause stinging or redness. Mineral formulas are often lighter and less greasy than other formulas, which may be more suitable for skin that’s prone to breakouts. Neutrogena Ultra Sheer Face Fluid SPF50 is an oil‑free, non‑clogging formula with a matte finish, which makes it a great choice for oily or acne‑prone skin. Dry skin: Choose hydrating formulas with moisturisers, such as hyaluronic acid or ceramides. La Roche‑Posay Anthelios Hydrating Lotion SPF50+ is a gentle formula that absorbs quickly, leaving skin soft and hydrated without feeling greasy. Skin tone Fair to medium: Both mineral and chemical sunscreens work well. Medium to dark: Chemical sunscreens tend to blend more easily into darker skin, but some tinted mineral sunscreens are now formulated to provide a matte finish without white residue. Trilogy SPF50+ Sheer Tinted Moisturising Sunscreen DEEP is a mineral sunscreen made with zinc oxide and plant oils, designed to blend smoothly into medium to dark skin without leaving a white cast. Kids and family Mineral sunscreens are generally recommended for babies and children because they’re gentler and less likely to upset their delicate skin. Choose broad-spectrum SPF 30 or higher, fragrance-free, and water-resistant formulas. Always patch-test new products on a small area of skin first. Invisible Zinc Junior Mineral Sunscreen SPF50 is a low-irritant formula suitable for children and infants over 6 months of age. A great option for families is the Marine Blue Sunscreen Lotion SPF50+, which comes in a huge 1L pump for easy dispensing (so there are no excuses!) It’s dermatologically tested and suitable for sensitive skin. Activities Even if a sunscreen is water-resistant, you’ll still have to reapply after swimming or bathing. Bondi Sands Sport SPF 50+ Sunscreen Spray resists water and sweat for up to four hours. Its Cool Motion Technology allows your skin to breathe while providing broad-spectrum sun protection. Natural options Natural sunscreens usually contain zinc oxide or titanium dioxide rather than synthetic UV filters and or other chemical additives. These are great if you prefer non-synthetic products, but check that your chosen brand guarantees broad-spectrum UV protection. Goodbye OUCH Sunbalm SPF50 is certified natural and water-free, and provides UVA-UVB broad spectrum. It’s also water-resistant for up to two hours. Makeup compatibility Both chemical and mineral sunscreens can be used under makeup, but some facial sunscreens are specifically designed to work with foundation. Bondi Sands Hydra UV SPF50+ Face Gel is a lightweight, non‑greasy formula with an invisible finish. Great for wearing under makeup or alone. Remember, sunscreen is only one part of protecting yourself from sunburn. Always wear a hat and sunglasses, cover up during the hottest periods of the day, and stay in the shade where possible. Check out our whole range of sunscreens (and anything else you might need on the beach or by the pool!) at Bargain Chemist. We’re your one-stop shop for summer sun protection! Tags: Baby skin care, Body care, Dry skin, Skin care, Summer, Sunscreen Share Previous articleNext article