Hydroxycinnamic Acid

Hydroxycinnamic acid is a naturally occurring antioxidant compound found in plants. It belongs to a class of chemistry known for neutralising free radicals—unstable molecules that damage skin cells when exposed to UV light, pollution and environmental stressors.In skincare formulations, hydroxycinnamic acid works as a skin conditioning agent, helping to support the skin's natural defence mechanisms against oxidative damage. It can be used alongside other antioxidants to enhance overall protective benefits.

Hydroxycinnamic acid neutralises free radicals and reactive oxygen species—unstable molecules created when skin is exposed to UV radiation, pollution and other environmental stressors. By removing these damaging molecules, the ingredient helps reduce oxidative stress at a cellular level.Research suggests it may also help support normal cellular ageing processes and reduce the inflammatory response associated with cumulative sun exposure and environmental damage. This is particularly relevant in protecting against photoaging.

Hydroxycinnamic acid is most effective as part of a broader antioxidant skincare routine. It works well in serums or moisturisers and can be layered with other treatment products. For optimal results, use consistently as part of your daily routine, and combine with sun protection during the day since antioxidants work best alongside UV defence rather than as a substitute for it.

Hydroxycinnamic acid is generally well-tolerated and suitable for most skin types. As with any new skincare ingredient, introduce it gradually and discontinue if you experience irritation.