The main components of essential oils include various plant oils and oil-soluble active ingredients. Common plant oils include jojoba seed oil, squalane (squalene), camellia seed oil, meadowfoam seed oil, macadamia seed oil, rosehip oil, and olive oil. Essential oils often contain added oil-soluble active ingredients such as vitamin E, vitamin C derivatives (e.g., ascorbate tetraisopalmitate), retinol (and its derivatives), coenzyme Q10, ceramides, and various plant extracts (e.g., ginseng, snow lotus, and camellia extract).
Mill-perspettiva tal-formulazzjoni, iż-żjut essenzjali huma prinċipalment maqsuma fi tliet kategoriji: żjut singoli li fihom komponent żejtni wieħed biss jew tlieta jew inqas; żjut komposti li fihom aktar minn tliet komponenti żejtnija u l-ebda ingredjenti bbażati fuq l-ilma jew ilma-(il-mainstream fis-suq); u prodotti li fihom kemm żjut multipli kif ukoll ilma.