There are several search results related to perfumery, but they provide different types of information. Here is a summary of each result:

1. Firmenich: This website provides a catalog of perfumery ingredients. It includes 492 products, and users can filter the results by ingredient type. However, there is no information about specific products or brands.

2. Think Dirty: This website explains what "fragrance" means in ingredient lists and why it can be problematic. Fragrance is not a single ingredient but rather a blend of many compounds, and companies are not required to disclose the individual elements. Some fragrance ingredients can be harmful, such as phthalates, which are known endocrine disruptors. The website recommends using beauty brands that do not use fragrance and disclose all their ingredients.

3. Creating Perfume: This website sells raw materials for perfume-making, such as essential oils, fragrance oils, and aroma chemicals. Customers can add products to their cart after signing in. There are also some positive reviews of the websites customer service and product selection.

4. Center for Research on Ingredient Safety: This website provides an overview of fragrances, including their characteristics and regulation. Fragrances are substances with strong-smelling organic compounds that manufacturers use in many products as a perfume. There are thousands of registered fragrance ingredients, and some can cause harm. Fragrances in products that are not applied directly to the body, such as laundry detergents, are regulated by the Consumer Product Safety Commission.

5. Karen Gilbert: This website explains how to dilute perfume materials before use. Many materials are difficult to work with in their raw state, so diluting them makes blending easier. Diluting also allows using tiny amounts of a material in a formula. The website recommends using perfumers alcohol for dilution and evaluation.

6. PubMed Central: This website provides a scientific article about the ubiquity, hazardous effects, and risk assessment of fragrances in consumer products. Fragrances are used to create pleasing scents or mask unpleasant odors in cosmetics and household products. Some fragrance ingredients can cause harm, such as allergenic and irritant effects. The article recommends improving the regulation of fragrance ingredients and increasing consumer awareness.

In summary, the search results provide information about perfumery ingredients, fragrance regulation, perfume-making supplies, dilution techniques, and fragrance safety. However, there is no information about specific perfumes or brands, their positive or negative aspects, or their ingredients or materials.