What it is
This is a synthetic aroma chemical valued for its delicate muguet (lily-of-the-valley) odor and good staying power in finished products. It was historically a popular component of fragrance accords in many personal care items, including sunscreens that carry a scent. Because it is a recognized contact allergen, its use has been heavily restricted and it has largely been phased out of modern formulations.
Safety & warnings
This material is a well-documented fragrance contact allergen and a frequent cause of allergic contact dermatitis, which is why its use has been progressively restricted and it is now disclosed on labels when present. People with known fragrance sensitivities or a history of contact allergy may wish to avoid products containing it; fragrance-free sunscreens are an alternative for sensitive or reactive skin.
Origin & sourcing
Synthetic aroma chemical produced industrially; it does not occur in nature in cosmetic-relevant quantities.
History
Lyral was introduced as a synthetic muguet note and saw broad use in fragrance and personal care products through the late twentieth century before allergen restrictions sharply curtailed its use.
Questions everyone asks
Why is Lyral being phased out of products?
It is a recognized fragrance contact allergen and a common cause of allergic contact dermatitis, so its use has been heavily restricted and it is increasingly replaced by other scent materials.
What does it do in a sunscreen?
It is a fragrance ingredient that adds a fresh, floral lily-of-the-valley note and helps mask the base odor of the formula.