What can oil do in a care routine?
Oil can change the hair's surface and finish, but does not add water or permanently repair split ends. Assess softness, shine and heaviness rather than promises of rebuilding from root to tip. Start sparingly and follow the particular product's directions.

How should you read the research?
Studies of particular formulas, populations and uses cannot automatically be applied to every hair oil. Results from ingestion do not demonstrate the same effect from application. This article does not recommend supplements or promise treatment for hair loss.
Choose a simple routine
- Choose for your desired finish and the product directions. Amount and placement matter particularly for fine or easily greasy hair; coarse or curly hair does not automatically need a lot of oil either.
- Try one product at a time in the recommended amount. Assess the feel and ease of washing it out before changing your routine.
- Adapt shampoo and conditioner to your normal wash. Oil does not replace cleansing, conditioner or a product developed for heat protection.

Can you mix them, and how often should you use them?
A homemade blend is not automatically better. A finished hair oil may already contain several oils. Follow its directions rather than a fixed mixing ratio or weekly schedule. The same applies to contact time and rinsing. Stop if irritation occurs. For a sensitive scalp or coloured hair, check whether the particular product is suitable rather than assuming it from the word natural.
Choosing and storing the oil
Choose a product intended for your use. Organic and cold-pressed do not by themselves establish better hair growth or suitability for sensitive skin. Follow expiry and storage directions, close the bottle and protect it from unnecessary heat and sunlight.
Frequently asked questions
Does more shine mean new hair growth?
No. Cosmetic finish and new hair growth are different outcomes requiring different evidence.