Best Castor Oil Solid Soap Bars of 2025

Charlotte Powell Avatar
Charlotte Powell
Last Updated: 8 Feb 2025

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Castor Oil Solid Soap Bars are a natural and eco-friendly alternative to traditional liquid soap. Made with all-natural ingredients, these soap bars are gentle on the skin and provide a luxurious lather that cleanses and moisturises. Castor oil is known for its hydrating properties, making it perfect for those with dry or sensitive skin. These soap bars are also free from harsh chemicals and synthetic fragrances, making them a great choice for those looking for a more natural skincare solution. With a variety of scents and sizes available, Castor Oil Solid Soap Bars are a great addition to any bathroom.

At a Glance: Our Top Picks

Friendly Soap Natural Lavender & Geranium Shampoo Bar Cover #TOP 1
Friendly Soap Natural Lavender & Geranium Shampoo Bar
ftb score rating icon 9.9
Friendly Soap Lavender & Tea Tree Shampoo Bar Cover #TOP 2
Friendly Soap Lavender & Tea Tree Shampoo Bar
ftb score rating icon 9.8
Friendly Soap Natural Peppermint & Eucalyptus Shampoo Bar Cover #TOP 3
Friendly Soap Natural Peppermint & Eucalyptus Shampoo Bar
ftb score rating icon 9.6

Top 7 Castor Oil Solid Soap Bars

Friendly Soap Natural Lavender & Geranium Shampoo Bar

SB002
Cream
Single
Friendly Soap Natural Lavender & Geranium Shampoo Bar Cover
Friendly Soap Handmade Natural Lavender & Geranium Shampoo Bar - Relaxing, Rich, Nourishing 95g, 1 unit

The Friendly Soap Shampoo Bar combines the soothing properties of Lavender and Geranium essential oils with the nourishing benefits of Coconut, Castor, and Olive oils. This handmade bar offers a rich, creamy lather that not only cleanses your hair but also deeply conditions your scalp, making it ideal for those seeking a gentle yet effective hair care option. Its natural ingredients ensure it is free from preservatives, sulphates, and palm oil, perfect for sensitive skin. Embrace a sustainable choice, knowing that your shampoo is cruelty-free and environmentally friendly.

What We Like
Handmade with natural ingredients
Deeply conditions hair and scalp
Sensitive skin friendly
Plastic-free and biodegradable
Cruelty-free and vegan

Friendly Soap Lavender & Tea Tree Shampoo Bar

SB001
Cream
95 g (Pack of 1)
Friendly Soap Lavender & Tea Tree Shampoo Bar Cover
Friendly Soap Handmade Natural Lavender & Tea Tree Shampoo Bar - Antibacterial, Rich, Nourishing 95g

The Friendly Soap Shampoo Bar is a handcrafted product made with soothing Lavender and Tea Tree essential oils, alongside nourishing Castor, Coconut, and Olive oils. This combination not only creates a luxurious creamy lather but also deeply cares for your hair. You will appreciate the refreshing scent that lingers, all while using a product that is free from preservatives, sulphates, and palm oil. Plus, it’s vegan-friendly and cruelty-free, making it a perfect choice for those with delicate skin.

What We Like
Handmade with natural ingredients
Rich, creamy lather
Vegan and cruelty-free
Plastic-free packaging
Environmental sustainability focus
#TOP 3

Friendly Soap Natural Peppermint & Eucalyptus Shampoo Bar

SB003
Cream
95 g (Pack of 1)
Friendly Soap Natural Peppermint & Eucalyptus Shampoo Bar Cover
Friendly Soap Handmade Natural Peppermint & Eucalyptus Shampoo Bar - Refreshing, Rich, Nourishing 95g

The Friendly Soap Shampoo Bar is a handcrafted blend of Coconut, Argan, Castor, and Olive Oils, paired with refreshing Peppermint and Eucalyptus essential oils. This combination not only nourishes your hair but also creates a rich, creamy lather that feels luxurious. With organic ingredients free from preservatives and sulphates, it's ideal for those with sensitive skin. Additionally, this eco-friendly option is vegan and cruelty-free, making it a responsible choice for your hair care routine.

What We Like
Handmade with natural ingredients
Rich, creamy lather
Vegan and cruelty-free
Eco-friendly packaging
Soothes and conditions hair
#TOP 4

Clovelly Handmade Shampoo Soap with Eucalyptus Mint

100 g (Pack of 1)
Clovelly Handmade Shampoo Soap with Eucalyptus Mint Cover
Clovelly Soap Co Natural Handmade Shampoo Soap Bar with Eucalyptus mint and Lemon for Dry-Normal Hair and Scalp 100g

The Clovelly Shampoo Soap is crafted with a blend of eucalyptus, mint, and lemon essential oils, designed to invigorate your senses while leaving your hair smelling fresh. This shampoo soap is particularly beneficial for those with normal to dry hair and scalp, as it includes castor oil for added moisture. Handmade using the traditional cold process in Devon, UK, it retains the natural benefits of its ingredients. Plus, it's vegan and biodegradable, making it a great choice for environmentally conscious consumers.

What We Like
Natural essential oils
Suitable for normal-dry hair
Handmade in the UK
Vegan and eco-friendly
Retains natural benefits
#TOP 5

100% Natural Handmade Lavender Soap Bar

1 count (Pack of 1)
100% Natural Handmade Lavender Soap Bar Cover
100% Natural HANDMADE SOAP BAR 90g -Anti Aging, Moisturising, Nourishing & Exfoliating, Cold Process ARTISAN Soap, HERBAL SKIN Oils & ESSENTIAL Oils, (Lavender)

The HK Online Lavender Soap is crafted by hand using a cold process, ensuring each bar is made with care and love for your skin. This 90g soap combines olive, coconut, and castor oils with goat milk and essential oils to provide deep moisturisation and essential nutrients. You'll enjoy a gentle scent that lingers on your skin, enhancing your daily routine. With a variety of compositions available, this soap caters to all skin types, offering exfoliating, anti-aging, and nourishing benefits.

What We Like
100% natural ingredients
Handmade with care
Moisturising and nourishing
Exfoliating properties
Suitable for all skin types

Loelle Organic Olive Oil Soap for All Skin Types

LOE302
Light Green
75 g (Pack of 1)
Loelle Organic Olive Oil Soap for All Skin Types Cover
Loelle - Organic Olive Oil Soap Made with Natural Ingredients - Solid Soaps for Body, Face and Hair - Facial Cleanser for Sensitive Skin, Made in Morocco (75g)

Loelle Organic Soap is a gentle and versatile product made with natural ingredients, perfect for your daily cleansing routine. It cleanses without drying the skin, making it ideal for dry, sensitive, or delicate skin, including that of children. You can use it as a solid facial cleanser, a shower gel, or even a gentle shampoo, offering convenience for various skincare needs. With certified organic ingredients like olive oil and coconut oil, this soap not only cares for your skin but also supports a women’s cooperative in Morocco, improving their living conditions.

What We Like
Gentle on sensitive skin
Multi-use for face, body, hair
Made with organic ingredients
Supports women’s cooperative
#TOP 7

lubiu Calendula Soap for Sensitive Skin

lubiu
A5-SUNH-750
100 g (Pack of 1)
lubiu Calendula Soap for Sensitive Skin Cover
lubiu Calendula Soap - 100 g Natural Soap Bar for Sensitive Body Wash and Moisturising Hand Wash - also as Baby Soap Bar - Natural Body Soap Bar

The lubiu Calendula Soap is a handmade, natural soap bar designed for all skin types, including dry and sensitive skin. Its creamy softness provides a gentle cleanse without stripping your skin, leaving it soothed and moisturised. Made from vegetable ingredients like olive oil and shea butter, this soap is also suitable for children's delicate skin. By choosing this eco-friendly option, you can enjoy a zero-waste alternative to traditional body washes, all while caring for the environment.

What We Like
Handmade and natural ingredients
Suitable for sensitive skin
Creamy and moisturising foam
Eco-friendly and biodegradable
Free from harmful additives
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Does castor oil make a hard bar of soap?

Castor alone makes a mushy not hard or brittle bar, though if used in higher percentages, it can make a nice shampoo bar. It'll never reach the fluffy lather of a coconut oil shampoo bar, though. Castor oil added to a soap recipe results in a stable lather that is low, dense, and creamy.

2. What does castor oil do in a bar of soap?

It increases lather in the soap which a imparts rich and creamy texture leaving a very bubbly feel. Castor oil is a humectant, i.e., it keeps our skin aptly moisturized. Around 10% of castor oil in the soap recipe will make wonders. The fatty-acid make-up of castor oil is unique.

3. Is castor oil soap good for skin?

There are innumerable Castor oil soap benefits like it is rich in ricinoleic acid which helps in fighting the skin bacteria that cause acne. It easily penetrates the skin layers and makes the skin smooth, supple to vitalize it naturally.

4. What kind of soap is used to make castor oil?

Castor oil is a natural thick, clear oil that helps produce a rich, creamy lather in soap. Castor oil is a humectant which attracts moisture to your skin. We suggest using 5% - 8% castor oil in cold process/hot process soap recipes.

Editor's Notes

During our castor oil solid soap bar research, we found 12 castor oil solid soap bar products and shortlisted 7 quality products. We collected and analyzed 26,422 customer reviews through our big data system to write the castor oil solid soap bars list. We found that most customers choose castor oil solid soap bars with an average price of £5.95.

The castor oil solid soap bars are available for purchase. We have researched hundreds of brands and picked the top brands of castor oil solid soap bars, including Friendly Soap, THE CLOVELLY SOAP CO., HK Online, Loelle, lubiu.

Written by
Charlotte Powell Avatar

Charlotte Powell is a dermatologist and a licensed cosmetologist from Westminster, London. However, she was first a cosmetologist from London Beauty Training School. According to Charlotte, she needed better insight into the human skin, hence the dermatology degree. Long before she acquired her degree, she wrote and edited articles, eBooks, and editorials for companies and websites. Charlotte combines her skill and knowledge in providing DIY Beauty tips amongst other fashion related topics.