Solanum Nigrum Extract: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 30, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Solanum Nigrum Extract?

Solanum Nigrum Extract comes from the whole black nightshade plant, a member of the Solanaceae family. The aerial parts are rich in naturally occurring compounds such as glycoalkaloids like solanine and solamargine, along with flavonoids, phenolic acids and small amounts of vitamins and sugars. Black nightshade has appeared in folk preparations for centuries, valued for its soothing properties long before modern science examined its constituents. As skin care moved toward plant based actives, formulators began exploring the extract for its ability to calm and condition the skin which led to its inclusion in contemporary products.

To produce the cosmetic grade extract, harvested plants are cleaned, dried and milled, then soaked in a solvent system—often a mixture of water, glycerin or mild alcohols—to pull out the water- and oil-soluble compounds. The liquid is filtered, concentrated and standardized so each batch delivers consistent levels of the desired molecules before preservatives are added.

You will typically find Solanum Nigrum Extract in calming masks, sensitive skin toners, lightweight moisturizers, after-sun gels, anti-aging serums and restorative spot treatments where its conditioning profile supports a smooth comfortable feel.

Solanum Nigrum Extract’s Cosmetic Benefits/Uses

This plant extract serves primarily as a skin conditioning agent, meaning it helps keep the surface of the skin soft supple and healthy looking. By supplying naturally soothing phytochemicals and a touch of antioxidant support it can reduce the feeling of dryness or tightness reinforce the skin’s barrier and lend a smoother more refreshed appearance when used regularly in leave-on or rinse-off formulas.

Who Can Use Solanum Nigrum Extract

Most skin types can benefit from products containing Solanum Nigrum Extract. Its gentle soothing profile suits dry, sensitive or mature skin that needs extra comfort while the lightweight nature of typical formulations makes it acceptable for normal and combination skin. Oily or acne-prone users usually tolerate it well since the extract itself is not known to clog pores, though they may prefer gel or fluid products rather than rich creams.

The ingredient is plant derived so it is suitable for vegans and vegetarians provided the overall formula and manufacturing process remain free of animal-derived additives.

Current data does not flag any specific concerns for pregnant or breastfeeding users when the extract is applied topically in cosmetic concentrations. That said this is not medical advice and anyone who is pregnant or nursing should review any skincare product with a qualified healthcare professional before use to be safe.

Solanum Nigrum Extract is not known to increase photosensitivity, meaning it should not make skin more prone to sunburn. Standard daytime sun protection habits are still recommended.

Potential Side Effects/Adverse Reactions

Side effects from topical Solanum Nigrum Extract can vary from person to person. The points below list potential reactions that are unlikely for the average user when the ingredient is properly formulated and used as directed.

  • Mild redness or stinging in very sensitive individuals shortly after application
  • Contact dermatitis in people allergic to plants from the nightshade family
  • Eye irritation if the product accidentally gets into the eyes
  • Interaction with other strong actives like high level exfoliating acids which may amplify sensitivity in compromised skin barriers

If any of the above reactions occur stop using the product and consult a healthcare professional for guidance.

Comedogenic Rating

Rating: 1 out of 5. Solanum Nigrum Extract is typically supplied as a water or glycerin based solution with very little oil content so it does not tend to block pores. Its molecules are mostly small flavonoids and sugars that rinse or absorb easily rather than sitting in the follicle. Because of this low likelihood of clogging, the extract is generally suitable for people who are prone to acne or breakouts. If a finished product pairs the extract with heavy butters or waxes the overall formula may rate higher so checking the full ingredient list is still smart.

Summary

Solanum Nigrum Extract is valued as a skin conditioning agent that helps calm, soften and support the skin barrier thanks to naturally soothing glycoalkaloids, flavonoids and a mild antioxidant boost. It is not among the trendiest botanicals but it quietly appears in niche soothing masks, toners and after sun gels where formulators want gentle comfort without heavy oils. Safety data shows a very low risk of irritation for most users when used at cosmetic levels and no evidence of systemic concerns. As with any new skincare ingredient it is wise to perform a quick patch test before full application to confirm personal tolerance.

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