Castor Oil
What Is It?
Castor oil is a thick, nutrient-rich oil extracted from the seeds of the Ricinus communis plant. It is high in ricinoleic acid, making it deeply hydrating, soothing, and beneficial for hair and skin health. Known for promoting hair growth and enhancing moisture retention, it is widely used in skincare, haircare, and cosmetic recipes.
INCI (International Nomenclature of Cosmetic Ingredients)
Ricinus Communis (Castor) Seed Oil
Proper Storage & Shelf Life
Storage: Store in a cool, dry place, away from direct sunlight.
Shelf Life: Castor oil has a shelf life of 1-2 years when stored properly.
Refined Or Unrefined
Refined Castor Oil: More processed, colourless, and odourless, making it ideal for cosmetic recipes.
Unrefined Castor Oil: Retains more nutrients, has a pale yellow colour, and a mild nutty scent.
Is It Necessary?
Yes if you need deep hydration and moisture retention. It is also a great choice for hair growth and scalp health. Works well in thick balms, salves, and oil blends.
Texture & Consistency
Thick, viscous, and slightly sticky.
Natural Scent Profile
Mild, slightly nutty aroma.
Solubility & Compatibility
Oil Soluble
Benefits In Your Skincare
Highly moisturising – Locks in moisture for skin and hair.
Ideal for lip balms, hair masks, and thick serums.
Rich in fatty acids – Nourishes and soothes dry, irritated skin.
Strengthens hair – Promotes hair growth and reduces breakage.
Creates a protective barrier – Helps seal in hydration.
PH
Around 5.0 to 7.0, making it skin-friendly and well-tolerated
Absorbency Rate
Slow, due to its thick and viscous texture. It tends to sit on the skin longer, creating a protective barrier and locking in moisture.
Recommended Usage Rate
• 5-100% in skincare and haircare products.
• 5-30% in lotions, creams, and body butters.
• Up to 100% in hair and scalp treatments.
Appearance
Pale yellow to colourless, thick liquid.
Strengths
✅ Deeply hydrating and nourishing.
✅ Promotes hair growth and scalp health.
✅ Long-lasting moisture retention.
✅ Ideal for thick, rich recipes.
Weaknesses
❌ Thick and sticky texture may feel heavy on the skin.
❌ Slower absorption compared to lighter oils.
Alternative Ingredients/ Substitutions
If you need a similar moisturising oil with a lighter feel, consider:
• Jojoba Oil – Balances skin and absorbs faster.
• Sweet Almond Oil – Hydrating but less sticky.
• Argan Oil – Lighter, nourishing, and absorbs quicker.
Best Practices
• Works well in balms, serums, and thick creams.
• Blend with lighter oils to reduce stickiness.
• Ideal for lash and brow serums.
• Can be used in massage oils for deep hydration.
Tips & Tricks
💡 Mix with coconut or jojoba oil for easier application.
💡 Great for scalp massages and deep conditioning treatments.
💡 Can be used as a natural lip balm or cuticle oil.
💡 Perfect for DIY eyelash and eyebrow serums.
Recommended Starter Amount
100-250ml (3.5-8.5 fl oz)