Frequently Asked Questions

KASTU is a bath and self-care brand focused on beautifully scented bath bombs, relaxing bath rituals, moisturizing bath experiences, and gift-ready self-care sets.

Our signature product is the KASTU 12 PCS Bath Bombs Gift Set. It is designed for relaxing baths, aromatherapy-inspired self-care, moisturizing comfort, and thoughtful gifting.

Each KASTU Bath Bombs Gift Set includes 12 bath bombs with different scent-inspired bath experiences.

KASTU bath bombs are made for people who enjoy relaxing baths, home spa moments, colorful fizz, soft fragrance, moisturizing bath care, and giftable self-care products.

KASTU bath bombs are designed for a moisturizing bath experience that helps skin feel soft, smooth, and refreshed after soaking.

The KASTU set includes a variety of aromatherapy-inspired scents such as vanilla, mint, rose, lavender, orange, milk, jasmine, cherry blossom, seaweed, osmanthus, gardenia, and ylang flower.

When dropped into warm water, a KASTU bath bomb fizzes and releases color, fragrance, and a relaxing bath atmosphere. It helps transform ordinary bath time into a spa-inspired self-care moment.

KASTU scents are designed to feel pleasant and relaxing rather than overpowering. The scent experience may vary depending on water temperature, bath size, and personal sensitivity.

KASTU bath bombs create fizz, foam, and a colorful bath experience. They are not the same as a traditional bubble bath product, but they help make the bath feel more fun, fragrant, and relaxing.

Using a KASTU bath bomb is simple:

• Fill your bathtub with warm water.
• Drop one bath bomb into the water.
• Let it fizz and dissolve.
• Soak, relax, and enjoy your bath ritual.

One bath bomb is usually enough for a full bath. However, you may use more depending on your preference, bathtub size, and desired fragrance or color intensity.

Yes. We recommend rinsing the bathtub after use to remove any remaining residue, petals, color, or bath bomb particles.

KASTU bath bombs are designed for a clean and enjoyable bath experience. As with any bath product, results can vary depending on tub material, water temperature, and cleaning habits. Rinse the tub after use for best results.

Store unused bath bombs in a cool, dry place away from water, humidity, and direct sunlight. Keep them sealed until ready to use.

Yes. KASTU bath bomb sets are designed to be gift-ready for birthdays, holidays, Mother’s Day, Father’s Day, Valentine’s Day, thank-you gifts, spa nights, and self-care moments.

KASTU gift sets are suitable for many occasions, including:

• Birthday gifts
• Mother’s Day gifts
• Father’s Day gifts
• Valentine’s Day gifts
• Christmas gifts
• Thank-you gifts
• Self-care gifts
• Spa night gifts

Yes. The KASTU 12 PCS Bath Bombs Gift Set is designed with beautiful presentation, making it easy to give as a thoughtful self-care gift.

Yes. KASTU bath bombs are suitable as self-care gifts for men and women who enjoy relaxing baths, soothing scents, and spa-inspired moments at home.

You can shop KASTU products through our website or directly on Amazon.

Buy KASTU Bath Bombs On Amazon →

Shipping time may vary depending on the sales channel, destination, and selected shipping method. If you purchase through Amazon, please check the Amazon product page for the most accurate delivery estimate.

Yes. If your order is placed through Amazon, tracking information will be available in your Amazon account once the order has shipped.

International availability may depend on the selling platform and destination country. Please check the product page or checkout page for current shipping availability.

Return eligibility may depend on where the product was purchased and the condition of the item. If you purchased through Amazon, please refer to Amazon’s return policy and your order details for return options.

If your item arrives damaged, please contact the platform where you placed the order as soon as possible and provide photos of the damaged product and packaging. If you need additional help, you can also contact KASTU support.

You can contact us through the Contact page on our website. Our support team will help with product questions, order questions, and general inquiries.