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1-Acetonaphthone: An In-Depth Look at Its Role in Cosmetics

Article last updated: June 12, 2024

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Ever wondered what gives your favorite skincare products their magical touch? Dive into our comprehensive exploration of 1-Acetonaphthone and discover its transformative role in the world of cosmetics, from its creation to its myriad benefits and potential side effects.

What Is 1-Acetonaphthone?

1-Acetonaphthone, also known as 1-(1-Naphthalenyl)ethanone or 1′-Acetonaphthone, is a chemical compound primarily used in the cosmetics industry for its fragrance and perfuming properties. This ingredient is derived from naphthalene, a hydrocarbon that is commonly found in coal tar and petroleum. Chemically, 1-Acetonaphthone is characterized by its naphthalene ring structure attached to an ethanone group, giving it a distinct aromatic profile.

The history of 1-Acetonaphthone in cosmetics dates back to the early 20th century when synthetic fragrances began to gain popularity. As the demand for more diverse and long-lasting scents grew, chemists started to explore various aromatic compounds, leading to the incorporation of 1-Acetonaphthone in perfumes and other fragranced products. Its ability to impart a pleasant, enduring scent made it a valuable addition to the perfumer’s palette.

The production of 1-Acetonaphthone typically involves the Friedel-Crafts acylation of naphthalene with acetyl chloride in the presence of a catalyst such as aluminum chloride. This process results in the formation of the ethanone group attached to the naphthalene ring, creating the final compound. The synthesized 1-Acetonaphthone is then purified and tested for quality before being used in various cosmetic formulations.

The Benefits/Uses of 1-Acetonaphthone

In this section, we will delve into the officially recognized cosmetic benefits and uses of 1-Acetonaphthone:


1-Acetonaphthone is primarily used in cosmetics for its fragrance properties. This means it is added to products to impart a pleasant scent. Whether it’s a floral, fruity, or musky note, the inclusion of 1-Acetonaphthone can enhance the overall sensory experience of using a cosmetic product. Imagine applying a lotion or a cream that not only nourishes your skin but also leaves a delightful aroma that lingers throughout the day. That’s the magic of 1-Acetonaphthone at work.


Closely related to its fragrance function, 1-Acetonaphthone is also used for perfuming. This involves its use in the formulation of perfumes and colognes. When used in this context, 1-Acetonaphthone helps to create complex and appealing scent profiles that can make a perfume stand out. It acts as one of the many ingredients that blend together to form a unique and memorable fragrance, making it a staple in the world of perfumery.

Note: the listed benefits above are exclusively based on the officially recognized and defined functions of the ingredient, as documented by the International Nomenclature of Cosmetic Ingredients (INCI).

Potential Side Effects & Other Considerations

1-Acetonaphthone is generally considered safe for use in cosmetic products, primarily serving as a fragrance and perfuming agent. However, as with any ingredient, there are potential side effects and considerations to keep in mind.

  • Skin irritation
  • Allergic reactions
  • Contact dermatitis

Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of 1-Acetonaphthone during pregnancy and breastfeeding are lacking. Therefore, it is advisable for these individuals to consult a healthcare professional for further advice before using products containing this ingredient.

Side effects and adverse reactions from 1-Acetonaphthone are relatively uncommon. However, it is always a good practice to conduct a patch test before widespread usage to ensure that your skin does not react adversely to the ingredient.

In terms of comedogenicity, 1-Acetonaphthone has a rating of 1 on a scale of 0 (totally non-comedogenic) to 5 (highly comedogenic). This low rating indicates that it is unlikely to clog pores and cause acne or blemishes, making it generally suitable for individuals prone to breakouts.

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