Let’s break down these fragrance ingredients:

• 2,4-Dimethyl-3-cyclohexen-1-carboxaldehyde: This synthetic aldehyde has a complex scent profile, often described as woody, green, slightly camphoraceous (like camphor or eucalyptus), and sometimes with a hint of citrus or floral notes. It’s used to add depth and complexity to fragrance compositions, particularly in woody, chypre, and fougère (fern-like) accords.

• 4-tert-Butylcyclohexyl acetate: This synthetic ester has a fresh, clean, floral scent, often compared to lily-of-the-valley (muguet). It’s used extensively in perfumery to create fresh, floral, and sometimes slightly green notes in various fragrance types, including floral bouquets, aquatic scents, and even some woody compositions.

• Ethyl methylphenylglycidate (Often sold under trade names like “Strawberry Glycidate”): This synthetic ester has a sweet, fruity, and distinctly strawberry-like scent. It’s used to create or enhance strawberry accords in perfumes, flavorings, and other scented products. It can also add a sweet, fruity lift to other fragrance types.

• Geraniol (3,7-Dimethyl-2,6-octadien-1-ol): As previously described, geraniol is a naturally occurring monoterpenoid alcohol found in plants like rose, geranium, and palmarosa. It has a sweet, rosy, and floral scent. It’s used to add a rich, rosy, and floral note to perfumes and other scented products.

• Linalool (3,7-Dimethyl-1,6-octadien-3-ol): Also previously described, linalool is a naturally occurring monoterpene alcohol found in many flowers and spices like lavender and coriander. It has a fresh, floral scent with a slightly sweet and woody undertone, often described as lavender-like.

• Linalyl acetate (3,7-Dimethyl-1,6-octadien-3-yl acetate): This is the acetate ester of linalool. It’s also naturally occurring and has a similar scent to linalool but is often described as sweeter, more floral, and with a slightly citrusy or bergamot-like aspect. It’s used to add a fresh, sweet, and floral note to perfumes and other scented products.

• Piperonal (3,4-Methylenedioxybenzaldehyde; also known as Heliotropin): This is a synthetic aldehyde with a sweet, powdery, floral scent reminiscent of heliotrope flowers, almonds, or cherry. It’s used to add a warm, powdery, and floral note to perfumes and other scented products, often contributing to powdery, almond, or cherry accords.

• alpha-iso-Methylionone (Isomethyl-alpha-ionone): As described previously, this is a synthetic fragrance ingredient with a powdery, floral, and slightly woody scent, reminiscent of violets or irises.

• d-Limonene (1-Methyl-4-(1-methylethenyl)cyclohexene): Also previously described, d-limonene is a cyclic monoterpene and the main component of citrus peel oils. It has a strong, fresh, citrusy, and lemony scent.

• dl-Citronellol (3,7-Dimethyl-6-octen-1-ol): As previously described, citronellol is a naturally occurring monoterpenoid alcohol with a fresh, floral, rosy, and citrusy scent. The “dl-” prefix indicates it’s a racemic mixture (equal amounts of the two enantiomers, d-citronellol and l-citronellol).

In summary, this list includes ingredients that contribute a range of scent profiles, including woody, green, camphoraceous, floral (lily-of-the-valley, rose, violet, heliotrope), fruity (strawberry), citrusy (lemon), and powdery notes. It contains both naturally occurring and synthetic ingredients.