What isevidencecom used for

For now, prioritise good sun protection with a broad-spectrum sunscreen, which not only protects against UV, but also light.

Evidence-informed decision making in public health uses the best-available evidence to inform decisions. The National Collaborating Centre for Methods and Tool’s (NCCMT’s) model for evidence-informed decision making in public health identifies sources of evidence into four domains: local health issues and local context; community and political preferences and actions; resources; and research. It is important to assess whether the quality of evidence is good enough to influence decision making.

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The Quality Assessment of Community Evidence Tools were created by reviewing existing frameworks, tools and measures for appraising population health and community evidence. The developers identified consistent themes, which yielded the three core dimensions of quality described in the Quality Assessment of Community Evidence Tools: relevant, trustworthy and equity-informed. Questions to inform each of the three dimensions are provided in table format for each source of evidence. In many cases, the suggested questions draw on published tools.

use the “night mode” setting on your device or use a blue-light filter app to reduce your exposure to blue light in the evening

So too much blue light can potentially worsen hyperpigmentation – overproduction of melanin leading to dark spots on the skin – especially in people with darker skin.

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The Quality Assessment of Community Evidence Tools help practitioners answer the question: “Is the quality of this evidence about community needs and preferences good enough to influence decision making?”

But there is a lack of rigorous testing for non-opaque products outside laboratories. This makes it difficult to assess if they work and if it’s worth adding them to your skincare routine.

Blue light is part of the visible light spectrum. Sunlight is the strongest source. But our electronic devices – such as our phones, laptops and TVs – also emit it, albeit at levels 100-1,000 times lower.

The Quality Assessment of Community Evidence Tools were developed to support you in using the best available evidence in practice, programs, and policy.

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Some research suggests blue light might damage collagen, a protein essential for skin structure, potentially accelerating the formation of wrinkles.

However, for most people, if you hold your device more than 10cm away from your skin, that would reduce your exposure 100-fold. So this is much less likely to be significant.

Seeing as we spend so much time using these devices, there has been some concern about the impact of blue light on our health, including on our eyes and sleep.

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Studies suggest exposure to blue light can stimulate production of melanin, the natural skin pigment that gives skin its colour.

minimise screen time before bed and create a relaxing bedtime routine to avoid the types of sleep disturbances that can affect the health of your skin

By suppressing melatonin, blue light exposure before bed disrupts this natural process, making it harder to fall asleep and potentially reducing the quality of your sleep.

This condition requires the skin to be well protected from all visible light at all times. The only products that are totally effective are those that block all light, namely mineral-based suncreens or some cosmetics. If you can’t see the skin through them they are going to be effective.

The beauty industry has capitalised on concerns about blue light and offers a range of protective products such as mists, serums and lip glosses.

A laboratory study suggests this can happen if you hold your device one centimetre from your skin for as little as an hour.

use sunscreen. Mineral and physical sunscreens containing titanium dioxide and iron oxides offer broad protection, including from blue light.

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We know blue light is particularly good at suppressing production of melatonin. This natural hormone normally signals to our bodies when it’s time for sleep and helps regulate our sleep-wake cycle.

Blue light exposure has been linked with some skin concerns, particularly pigmentation for people with darker skin. However, research is ongoing.

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Supplementary tools are included with each version of the Quality Assessment of Community Evidence Tool. Below is a list of resources to explore if you are interested in knowing more about how to assess the quality of a particular dimension. If you find that the quality of currently available evidence is poor or limited, these resources can help you improve the quality of future evidence and documentation.

Michael Freeman is a founder of The Skin Centre, a private dermatology practice on the Gold Coast, Queensland. The centre has developed its own range of skincare products.

Here are some simple steps you can take to minimise your exposure to blue light, especially at night when it can disrupt your sleep:

The stimulating nature of screen content further disrupts sleep. Social media feeds, news articles, video games, or even work emails can keep our brains active and alert, hindering the transition into a sleep state.

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Sleep deprivation can elevate cortisol levels, a stress hormone that breaks down collagen, the protein responsible for skin’s firmness. Lack of sleep can also weaken the skin’s natural barrier, making it more susceptible to environmental damage and dryness.

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Social media is full of claims that everyday habits can harm your skin. It’s also full of recommendations or advertisements for products that can protect you.

If the skin around your eyes looks dull or puffy, it’s easy to blame this directly on blue light. But as we know blue light affects sleep, what you’re probably seeing are some of the visible signs of sleep deprivation.

There are many available tools to assess the quality of research evidence indexed in our Registry of Methods and Tools. Several modules in our Learning Centre can help you learn how to do critical appraisal. A tool to assess the quality of evidence for resources is currently in development. Sign up for our monthly newsletter to stay up-to-date on new products.

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The following resources were used to inform the development of the Quality Assessment of Community Evidence Tools. Access these resources to explore any of the included domains.

From a practical perspective, probably only those with the more troublesome hyperpigmentation known as melasma need to be concerned about blue light from devices.

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