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Lab Notes

Ingredient science, skin biology and formulation stories from Pai's London Innovation Lab. The research behind the results.

Smiling woman with curly hair applying Pai Bright Now PHA Exfoliating Toner with cotton pad against warm orange background

The Key Differences between Pai Bright Now PHA and Ren Ready Steady Glow AHA - at a glance

Ed Saper April 4th, 2026 9 minute read

Lab Notes

Close up image of two bottles of orange Pai Bright Now Exfoliating Toner, one on its side, left, and the base of the second, right

How do PHAs work? Your guide to polyhydroxy acids

Sarah Brown March 31st, 2026 4 minute read

Lab Notes

Close up of a bottle of the orange Pai Bright Now Exfoliating Toner being poured onto a reusable cotton pad

What does Niacinamide do for skin?

Sarah Brown March 31st, 2026 5 minute read

Lab Notes

Fresh green centella asiatica leaves with distinctive circular shape and natural texture, key ingredient in cica skincare products

Why everyone should use Cica

Judy Johnson September 8th, 2025 10 minute read

Lab Notes

Clear water droplets beading on brushed metal surface showing hydrophobic properties

Everyone’s talking about exosomes

Judy Johnson September 8th, 2025 9 minute read

Lab Notes

Woman applying anti-aging cream to her face, focusing on the eye area where fine lines are visible

What does NAD+ do for your skin?

Judy Johnson September 8th, 2025 8 minute read

Lab Notes

Close-up of a smiling woman's face showing natural skin with light freckles and sun spots from UV exposure

The science behind sunburn

Sarah Brown June 20th, 2025 8 minute read

Lab Notes

The Impossible Tan self tan drops bottle in warm amber gradient packaging with golden droplet design

BTS: The making of our self tan drops

Judy Johnson April 16th, 2025 8 minute read

Lab Notes

Three Pai Skincare products arranged on white surface with natural shadows - white tube, golden yellow Rosehip BioRegenerate Oil serum, and white spray bottle for sensitive skin care

Why ceramides are game-changers for sensitive skin

Caroline Ferry March 4th, 2025 9 minute read

Lab Notes

Hands applying golden facial oil from amber glass bottle with dropper onto chest, gentle skincare routine for sensitive skin

The ultimate retinoid for sensitive skin

Caroline Ferry February 26th, 2025 7 minute read

Lab Notes

Smiling woman with curly hair gently massaging white cream cleanser onto her face with both hands

What does your skin barrier do?

Elizabeth Bennett December 20th, 2024 9 minute read

Lab Notes

White skincare serum with ectoin ingredient label showing age confidence and skin protection benefits

Ingredient spotlight: Ectoin

Caroline Ferry October 16th, 2024 6 minute read

Lab Notes

Close-up of woman with glowing skin applying echium skincare product, showcasing smooth complexion and anti-aging benefits

Echium: A smoothing powerhouse for ageing skin

Judy Johnson September 3rd, 2024 8 minute read

Lab Notes

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