Daylights® Fairlane (Transition)

Key Benefits

• Filters 75% of fatigue-causing blue light indoors.

• Photochromic lenses block 99% of UVA and UVB outdoors.

• Reduces eye strain from long screen sessions.

• Supports focus and sustained daytime energy.

• Lightweight frame designed for all-day comfort.

TrueDark Daylights® Fairlane (Transition) are built for modern, screen-heavy days that move between indoor and outdoor environments. The yellow photochromic lenses filter 75 percent of harmful blue light from screens and LEDs, helping reduce eye strain and daytime fatigue while allowing energising wavelengths that support alertness and focus.

When stepping outside, the lenses automatically transition to block 99 percent of UVA and UVB rays, providing seamless protection without changing glasses. The classic square frame is crafted from lightweight, durable polycarbonate and finished in matte black for everyday wear. Polarised lenses reduce glare without distorting natural light, making Daylights® Fairlane ideal for workdays, commuting, and extended screen use while supporting a naturally balanced circadian rhythm.

Each pair includes a foldable hardshell case and a microfibre lens cleaning cloth.

Light doesn’t just help you see. It tells your brain how to feel and when to switch on or off. TrueDark focuses on managing what the brand calls “junk light” — artificial blue, green, and violet wavelengths from screens and modern lighting that interfere with your circadian rhythm. Unlike basic blue-light glasses, TrueDark lenses are designed to filter specific wavelengths at different times of day, helping reduce overstimulation and support more natural sleep and focus patterns. Plus, TrueDark is the only brand backed by EEG-verified research showing brainwaves can shift from alert beta states into calmer alpha and even deep-sleep delta states. It’s a practical tool for navigating modern light exposure, not a fashion accessory.

TrueDark was founded by Dave Asprey after years of struggling with poor sleep caused by artificial lighting. When standard blue blockers failed to make a meaningful difference, he worked with neuroscientists and circadian biology experts to develop a more complete light-management system. The insight was simple: blue light isn’t the only problem — green and violet light also affect brain signalling when exposure happens at the wrong time. TrueDark lenses were created to block the right wavelengths at the right moments, helping people better align with their natural 24-hour rhythm. Designed as a sleep, focus, and performance tool, TrueDark exists to help people feel better by fixing light at the source.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

When: Mid-morning to early evening.

Where: Great for heavy screen use and in artificially lit environments like offices, airports, stores, and events. Transition lenses are meant for brief outdoor use. For optimal circadian support, allow some natural sunlight exposure while outside.

Why: Supports energy and focus by filtering fatigue-causing junklight wavelengths while letting in beneficial light.