Frequently Asked Questions

Find answers to common questions about spa science, light therapy, spray tanning, and skincare. Can't find what you're looking for? Explore our articles and glossary for more in-depth information.

About Red Light Therapy

About UV Light and Tanning

About Spray Tanning

About Skincare Science

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Dive deeper into the science with our comprehensive articles and interactive visualizations.

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Frequently Asked Questions

About Red Light Therapy

Is red light therapy safe?

How often should I use red light therapy?

Can red light therapy help with wrinkles?

What's the difference between red light and near-infrared?

About UV Light and Tanning

How does the skin produce vitamin D from sunlight?

Is a 'base tan' protective against sunburn?

Why does skin tan?

About Spray Tanning

Is spray tanning safe?

Why do spray tans sometimes turn orange?

How long does a spray tan last?

Does a spray tan protect against UV damage?

About Skincare Science

What order should I apply skincare products?

Can I use retinol and vitamin C together?

How long does it take for skincare products to work?

What does 'non-comedogenic' mean?

About This Website

Who writes the content on Spa Science Lab?

How do I use the glossary?

What are the interactive visualizations?

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