Tonic

Ocimum Basilicum Leaf

INCI: OCIMUM BASILICUM LEAF

Reviewed by Rosie · Last updated 14 Aug 2026

A plant extract with antioxidant properties traditionally used to support skin health

Best For Skin Types

All, Oily, Combination

Addresses

Free radical damage, Skin tone, Texture

Usage Frequency

Daily

What Is Ocimum Basilicum Leaf?

Ocimum basilicum leaf, commonly known as sweet basil, is an herb native to tropical regions and widely cultivated across the world. In skincare, extracts of the leaf are used for their phytochemical composition, which includes polyphenolic compounds, flavonoids and tannins.

The ingredient functions as a tonic in formulations, typically incorporated as a hydro-alcoholic extract. Its primary role centres on antioxidant activity, which relates to the plant's ability to help neutralise free radicals in the skin.

How It Works

Basil leaf extract works primarily through its polyphenolic and flavonoid content. These compounds have the chemical ability to donate electrons to free radicals, potentially reducing oxidative damage in the skin. This antioxidant mechanism is thought to support skin resilience and overall skin health.

Some research suggests the extract may also have mild astringent properties due to its tannin content, which could be relevant for certain skin conditions, though this effect remains modest.

Clinical Evidence & References

Laboratory studies have demonstrated that hydro-alcoholic extracts of basil leaves exhibit significant antioxidant activity in vitro, with some extracts showing inhibition rates comparable to standard antioxidant references. Research has also evaluated the safety profile of basil extracts on various skin cell types, finding minimal cytotoxic effects at typical use concentrations.

However, evidence from human clinical trials specifically examining basil leaf extract in skincare formulations is limited. Most supporting data comes from in vitro studies and animal models, so the magnitude of benefit in real-world topical use remains uncertain. Further human studies would help clarify its practical efficacy in skincare products.

How to Use

Basil leaf extract is typically incorporated into serums, tonics, or hydrating products at low concentrations as part of a broader formulation. It works well alongside other antioxidants and is generally compatible with most skincare routines. As with any new ingredient, introduce it gradually to monitor your individual response.

Safety & Precautions

Basil leaf extract is generally well-tolerated in skincare formulations. Patch testing is advisable if you have known sensitivities to plants in the Lamiaceae family, though allergic reactions are uncommon.

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Part of a family

Ocimum Basilicum Leaf is a variant of Ocimum Basilicum Flower/Leaf/Stem Extract, the form you will most often see on an ingredients list.

A botanical extract with mild antioxidant and soothing properties

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