There are many resources available online that provide information on perfume ingredients. Here are a few places to start:
Fragrantica: This is a popular online fragrance community that provides information on perfume ingredients, including top notes, heart notes, and base notes. They also have a comprehensive fragrance directory with reviews and user ratings.
Perfumer's Apprentice: This website offers a range of fragrance ingredients, including essential oils, aroma chemicals, and fragrance oils. They also provide detailed information on each ingredient, including its scent profile, usage rates, and blending recommendations.
The Good Scents Company: This is a database of fragrance and flavor ingredients that provides information on their chemical structures, scent profiles, and usage rates.
The Perfume Society: This is a UK-based organization that offers a range of educational resources on perfume, including ingredient information, perfume history, and scent profiling.
Basenotes: This is another online fragrance community that provides information on perfume ingredients, including user reviews, ingredient profiles, and fragrance news.
These are just a few resources available online. You can also find information on perfume ingredients in books and academic journals, as well as through classes and workshops offered by perfumery schools and organizations.