Kojic acid is a natural compound derived from fungi during the fermentation of rice. It works by inhibiting tyrosinase, the enzyme responsible for melanin production, which helps to gradually lighten dark spots, hyperpigmentation, and uneven skin tone. It's one of the most well-researched skin-brightening ingredients available.

Yes, kojic acid is widely considered safe for topical use and has been used in skincare for decades. It is suitable for most skin types when used as directed. If you have very sensitive skin, we recommend patch testing first and starting with shorter contact times. Discontinue use if persistent irritation occurs.

Most users begin to notice visible improvements in skin tone and brightness within 2–4 weeks of consistent daily use. Full results, including fading of dark spots and a more even complexion, typically develop over 6–8 weeks. Results vary depending on skin type and the concern being treated.

Absolutely. Kojie San kojic acid soap is formulated for use on both face and body. For facial use, keep the lather on for 30 seconds initially and gradually increase to 60 seconds as your skin adjusts. Always follow with a moisturiser and SPF during the day.

Wet your skin, lather the soap in your hands or on a flannel, and apply the lather to your skin. Leave it on for 30–60 seconds, then rinse thoroughly with water. Pat dry and follow with a moisturiser. For best results, use once or twice daily as part of your regular skincare routine.

We recommend starting with once daily and increasing to twice daily (morning and evening) once your skin has adjusted. If you experience any dryness or tightness, reduce to once daily and ensure you're moisturising afterwards. Consistency is key to seeing results.

For the best routine, follow this order: cleanse with the Kojie San soap or face wash, apply toner, follow with serum, then moisturiser, and finish with sunscreen during the day. You don't need every product — even using the soap and a moisturiser is a great starting point.

Kojie San soap can be used on sensitive skin, but we recommend starting slowly. Use it once daily with a 30-second lather time and always follow with a gentle moisturiser. If your skin feels tight or irritated, reduce usage to every other day until your skin builds tolerance.

We always recommend starting with the Kojie San kojic acid soap — it's the hero product and the foundation of any Kojie San routine. The 65g bar is perfect for trying it out, or the 100g bar offers better value for regular use. Once you're seeing results, add a moisturiser and SPF to enhance and protect your progress.

Kojie San is the original kojic acid range — effective, affordable, and the most popular. DreamWhite is a premium line with added collagen for anti-ageing and extra hydration. Pureganics is formulated with organic ingredients for those who prefer a more natural approach. All three ranges contain kojic acid as their core active ingredient.

Our starter bundles are designed specifically for beginners and typically include the soap, a moisturiser, and SPF — everything you need for a simple but effective routine. Bundles also offer better value than buying products individually. Check our Bundles collection for the latest options.

We stock the Kojie San kojic acid soap in three sizes: 65g (great for trying it out or travel), 100g (our most popular — ideal for regular use), and 135g (best value for committed users). All three sizes contain the same effective formula.

Orders placed before 2pm (Monday–Friday) are dispatched the same day. We use Royal Mail tracked delivery, which typically arrives within 1–3 working days for UK addresses. You'll receive a tracking number by email once your order has been dispatched.

Yes, all orders are sent via Royal Mail tracked delivery as standard — no need to pay extra. You'll receive your tracking number by email once your order has been dispatched. Most UK orders arrive within 1–3 working days.

We currently focus on UK delivery to ensure fast dispatch and reliable tracked shipping. If you're outside the UK and interested in our products, please contact us at support@kojic.co.uk and we'll do our best to help.

We are an authorised UK stockist of Kojie San products, listed on the official BEVI website. Every product we sell is sourced directly through authorised distribution channels, guaranteeing authenticity. Buying from unauthorised sellers risks receiving counterfeit or expired products.

Yes, kojic.co.uk is an officially authorised UK stockist of Kojie San products. You can verify this on the BEVI website, which lists all approved retailers. We source all our stock directly through authorised channels, so you can buy with complete confidence.

We offer a standard returns policy for unopened, unused products returned within 14 days of delivery. If you've received a damaged or incorrect item, please contact us at support@kojic.co.uk with a photo and your order number, and we'll sort it out promptly.

We're sorry if that's happened. Please email support@kojic.co.uk with your order number and a photo of the damaged item within 48 hours of delivery. We'll arrange a replacement or refund as quickly as possible — no hassle.

You can reach our team by emailing support@kojic.co.uk. We aim to respond to all enquiries within 24 hours during business days. For order-related queries, please include your order number so we can help you faster.