Support

Frequently asked.

The questions our customer care team answers most often. If yours is not here, write to us — we reply within one business day.

How often can I use the scalp comb?

Daily. The 72 soft-tipped bristles are designed for everyday use, and a four-minute session in the morning or before bed is enough. If you are applying a medicated serum, follow the guidance on that product.

Does the comb work on wet hair?

Yes. It is rated IPX7, so it can be used in the shower and rinsed under running water. Dry the charging port before plugging it in.

How much serum does the reservoir hold?

6ml, delivered through eight guide balls. A full tank covers roughly a week of daily use. Clean the guide parts regularly so the flow stays even.

What does 630nm light actually do?

630nm is a red wavelength that penetrates the scalp to the follicle rather than being absorbed at the surface. We specify it because it is the wavelength we use — not because it sounds technical.

Which temperature should I use on the styling iron?

140°C for fine or coloured hair, 160°C for normal hair, 180°C for hair that resists shape, and 200°C only for coarse, thick hair. Never hold the iron in one place for more than five seconds.

Can I use the styling iron abroad?

Yes. The input is 110–240V, so it works from the United States to Europe or the UK with a plug adapter only.

Can I use the comb with a medicated scalp treatment?

Yes — the 6ml reservoir takes oils and liquid serums. Rinse the guide parts after each use so residues do not clog the balls, and follow the guidance on the treatment you are using.

How long does delivery take?

1–2 business days in Wilmington, Delaware, Jeddah and Dammam, 2–4 days elsewhere in the Kingdom. Delivery is free across the United States.

What if my product stops working?

Email care@yuleehair.cn with your order number and a short video of the fault. Every instrument has a two-year warranty; we collect faulty units at our cost and ship a replacement.

Can I return a product I have used?

For hygiene reasons, used personal-care instruments cannot be returned for a change of mind. Unused items in original packaging can be returned within 30 days, and faulty items are always covered.

Still need help?

We answer in one day.

Contact customer care