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C15-19 Alkane and Cetyl Dimethicone are both softens and smooths ingredients. C15-19 Alkane is found in 14 products while Cetyl Dimethicone appears in 12, making C15-19 Alkane the more widely used option.
Softens and smooths
Silicone-based emollient
10% Niacinamide Night Mask
C15-19 Alkane is categorised as "Softens and smooths" while Cetyl Dimethicone is categorised as "Softens and smooths". They serve different functions in skincare formulations.
In most cases, these ingredients can be used together. However, always patch test and introduce new ingredients gradually.
C15-19 Alkane is found in 14 products, while Cetyl Dimethicone is found in 12 products in our database.
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© 2026 Gracie. All rights reserved. Data sourced from Open Beauty Facts (ODbL) and EU CosIng.