Shoppers now see “marijuana” (cannabis-derived) treatments across the aisle—oils, serums, and sprays—each built from different chemistries and meant to solve different needs. Knowing how they’re formulated and how they behave on hair helps consumers choose a product that actually fits their texture, routine, and styling goals.

Marijuana Oils: Lipid-Rich Nourishment

“Oils” are typically lipid carriers (e.g., hemp seed, argan, jojoba, coconut) infused with cannabinoids such as CBD or, in some jurisdictions, low-THC extracts. Because they’re oil-based, these formulas excel at softening, sealing moisture, and reducing friction during combing—particularly on coarse, curly, or very dry hair. Classic research in the International Journal of Trichology shows certain oils (notably coconut) reduce protein loss by diffusing into the hair shaft and limiting hygral fatigue. Cannabinoids add antioxidant and soothing potential, supported by dermatology literature indicating anti-inflammatory and barrier-supportive properties of cannabinoids on skin and scalp. Oils can feel heavy on fine hair, so shoppers should start with 1–3 drops on mid-lengths and ends, or use as a pre-shampoo treatment. On the scalp, look for lightweight carriers (squalane, jojoba) and check comedogenicity if prone to buildup.

Marijuana Serums: Cuticle-Smoothing, Frizz Control, and Shine

Serums are usually silicone-based or water-silicone hybrids that create a thin film over the cuticle to tame frizz, boost gloss, and enhance slip. In these systems, cannabinoids are often dispersed within emollients or microemulsions, contributing antioxidant support while the film-formers do the heavy lifting for instant smoothness. For heat styling, serums frequently incorporate heat-responsive polymers that reduce surface damage by lowering friction and limiting moisture loss during blow-drying. Color-treated and high-porosity hair types tend to benefit most. Consumers who avoid silicones can look for serum alternatives that use lightweight esters or sugar-derived polymers. Because serums are surface-focused, they’re ideal for daily finishing without the weight of a traditional oil.

Marijuana Sprays: Lightweight Mists for Protection and Manageability

Sprays (aerosol or pump) deliver ultra-thin, even layers—perfect for fine or straight hair that collapses under richer products. Formulations span detangling mists, leave-in conditioners, UV/heat protectants, and shine/anti-static sprays. Cannabinoid levels are typically modest (to maintain clarity and viscosity), but the format excels at even distribution of protective polymers and conditioning quats. For hot tools, look for sprays labeled as “heat protectant” that contain film-forming agents tested to reduce cuticle damage at common styling temperatures; for sun or outdoor exposure, seek UV filters and antioxidants. Sprays are also great for refreshes between wash days because they won’t overload roots.

Quality, Safety, and Label Literacy

Regardless of format, credible shopping includes reading the INCI list, checking cannabinoid amount (mg per mL or per bottle), and scanning a recent certificate of analysis (COA) from a third-party lab for potency and contaminants. The U.S. FDA reminds consumers that cosmetics (including CBD-containing hair products) must be safe and properly labeled; avoid unproven drug-like claims and patch-test new products—especially on sensitive scalps. Guidance from dermatology groups (e.g., the American Academy of Dermatology) also supports heat moderation, gentle cleansing, and conditioning to limit breakage.

Bottom line: Oils nourish and seal, serums smooth and add gloss, and sprays protect and manage—choose by hair density, porosity, and styling habits, and verify quality with clear labeling and a COA.