The secret of red onion

Sometimes the best solutions for healthy and beautiful hair come from nature. One of them is hidden in red onions. Although it may sound strange, red onions have been an ally for stronger, thicker, and shinier hair for centuries — and now we know the scientific explanation why.

From tradition to dermocosmetics

Red onion is known from "home recipes", but its use in pure form is not practical: smell, irritation and instability of active compounds limit the effect. That's why at Nuggela & Sulé we combined traditional wisdom and modern formulation: we developed a stabilized red onion extract that retains its benefits — without unpleasant odor and without irritation.

Active ingredients: quercetin and sulfur

There are two main “heroes” of red onion:

• Quercetin — a powerful flavonoid that helps reduce scalp inflammation and stimulates microcirculation; follicles are better supplied with nutrients and hair is more resilient.
• Sulfur — the “beauty mineral,” essential for keratin synthesis. It has antiseptic properties, helps reduce fungi and bacteria, and regulates sebum.

Why is red onion so effective?

In addition to stimulating growth and strengthening roots, red onion also brings a number of additional benefits for scalp and hair health:

• helps regulate sebum secretion and balance an oily scalp
• has an antiseptic effect and helps remove dandruff
• may delay the appearance of gray hair thanks to antioxidant compounds
• gives extra volume, shine and softness
• strengthens hair structure and reduces breakage

In other words, red onion doesn't just treat symptoms — it targets the cause of the problem and restores balance to the scalp, which is the key to healthy, beautiful, and thick hair.

Our approach: nature + science

Combined with marine glycogen , which energizes follicles and supports the anagen growth phase, red onion extract has become the foundation of our hair strengthening approach. Our treatments target the roots: strengthening the follicle, reducing hair loss and promoting healthy hair growth.

Products containing red onion extract

• No.1 shampoo — cleanses, stimulates microcirculation and helps with hair loss.
• Serum Forte — advanced, concentrated care for scalp and density.
• Regeneration ampoules — targeted action for increased hair loss and weaker growth.
• Conditioner — softens, restores and restores elasticity without weighing down the hair.

How to introduce red onion into your skincare routine

1. Washing: use No.1 shampoo 3–4 times a week (or as needed), gently massaging the scalp.
2. Scalp treatment: apply Serum Forte or ampoules as directed, especially during periods of increased hair loss.
3. After washing: apply the conditioner to the lengths and ends, rinse; add heat protection if needed.

Conclusion: the secret of red onion is not just in tradition — it is in synergy with modern science. With regular use of our treatments, hair becomes stronger, thicker and more vital — without an unpleasant odor, but with the full effect of nature.

Discover the power of red onion and restore balance, shine, and density to your hair.