Essential Oil Dilution Calculator — Safe Dilution Ratios for Every Use
💧 Essential Oil Dilution Calculator
Calculate the exact number of drops and millilitres of essential oil needed for any application — massage oils, face serums, body lotions, roll-ons, bath products, room sprays, and diffusers. Based on NAHA (National Association for Holistic Aromatherapy) safety guidelines.
⚠️ Never apply undiluted essential oils directly to skin. Even "gentle" oils like lavender can cause sensitisation with repeated undiluted use. Always dilute in a carrier oil or appropriate base.
🚨 Critical Safety Disclaimers:
1. Not Medical Advice: Essential oil dilution guidelines are based on NAHA and Robert Tisserand safety standards. This tool is for educational reference only and does not replace consultation with a certified aromatherapist or medical professional.
2. Patch Test Mandatory: Always perform a 24-hour patch test on the inner forearm before full application, even at recommended dilutions. Apply a small amount, cover with a bandage, and check for redness, itching, or irritation after 24 hours.
3. Pregnancy: Many essential oils are contraindicated during pregnancy, especially in the first trimester. The oils listed as safe are based on general guidelines — always consult your gynaecologist or a certified aromatherapist before use during pregnancy.
4. Children: Children require significantly lower dilutions. Many oils safe for adults are NOT safe for children. Avoid eucalyptus, peppermint, rosemary, and clove near children under 10. Never apply essential oils near a child's face.
5. Photosensitivity: Citrus oils (lemon, bergamot, lime, grapefruit) cause photosensitivity. Do not apply to skin exposed to sunlight within 12–24 hours. Use steam-distilled or furocoumarin-free (FCF) versions for daytime use.
6. Sensitisation Risk: Repeated use of the same essential oil can cause sensitisation (allergic reaction) over time. Rotate oils and take breaks. Once sensitised to an oil, the reaction is permanent.
7. Epilepsy: Avoid rosemary, eucalyptus, camphor, and spike lavender if you have epilepsy or seizure disorders.
8. Pets: Many essential oils are toxic to cats, dogs, and birds. Never apply essential oil products to pets without veterinary guidance.
9. Source: Dilution guidelines based on Tisserand & Young (2014) "Essential Oil Safety" and NAHA Aromatherapy Safety Guidelines. Blueberry Botanicals is not responsible for adverse reactions arising from use of this tool.
1. Not Medical Advice: Essential oil dilution guidelines are based on NAHA and Robert Tisserand safety standards. This tool is for educational reference only and does not replace consultation with a certified aromatherapist or medical professional.
2. Patch Test Mandatory: Always perform a 24-hour patch test on the inner forearm before full application, even at recommended dilutions. Apply a small amount, cover with a bandage, and check for redness, itching, or irritation after 24 hours.
3. Pregnancy: Many essential oils are contraindicated during pregnancy, especially in the first trimester. The oils listed as safe are based on general guidelines — always consult your gynaecologist or a certified aromatherapist before use during pregnancy.
4. Children: Children require significantly lower dilutions. Many oils safe for adults are NOT safe for children. Avoid eucalyptus, peppermint, rosemary, and clove near children under 10. Never apply essential oils near a child's face.
5. Photosensitivity: Citrus oils (lemon, bergamot, lime, grapefruit) cause photosensitivity. Do not apply to skin exposed to sunlight within 12–24 hours. Use steam-distilled or furocoumarin-free (FCF) versions for daytime use.
6. Sensitisation Risk: Repeated use of the same essential oil can cause sensitisation (allergic reaction) over time. Rotate oils and take breaks. Once sensitised to an oil, the reaction is permanent.
7. Epilepsy: Avoid rosemary, eucalyptus, camphor, and spike lavender if you have epilepsy or seizure disorders.
8. Pets: Many essential oils are toxic to cats, dogs, and birds. Never apply essential oil products to pets without veterinary guidance.
9. Source: Dilution guidelines based on Tisserand & Young (2014) "Essential Oil Safety" and NAHA Aromatherapy Safety Guidelines. Blueberry Botanicals is not responsible for adverse reactions arising from use of this tool.
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