The perfect length for hair removal: How long should hair be for IPL?

Why does hair length matter for hair removal?

Hair length matters because it affects how easily each removal method can work on the hair. If hair is too short, methods such as waxing, sugaring or epilating may not be able to grip it properly. If it is too long, removal can feel less comfortable or be harder to control.

Below are the recommended hair lengths and preparation tips for each hair removal method:

What is the best hair length for trimming

Most trimmers can cut hair at almost any length. For particularly long hair, start with a longer comb or guard, then gradually reduce the length for an easier, more even trim.

What is the best hair length for shaving

For a smooth, close shave, you’ll want the hair to be fairly short, around 1 to 2 mm in length. If your hair is longer, trim it down first before shaving for a smoother, more comfortable result.

What is the best hair length for hair removal cream

Hair removal creams can generally be used on short or longer visible hair, so you usually don’t need to grow it to a specific length first. If your hair is particularly long, trimming it down a little with scissors or an electric trimmer can make it easier to get an even layer of cream over the hairs.

Always follow the instructions for your chosen hair removal cream, as application and suitability can vary.

How long does hair need to be to wax

Hair should be around 6 mm long for waxing, so that the wax has enough hair to grip.¹

• If the hair is too long, trimming it can make waxing less messy and painful.
• If the hair is too short, the wax may not remove it effectively.

Before waxing, gently wash the skin and hair to help the wax adhere to the skin properly.

How long should hair be for sugaring

Sugaring uses a sugar-based paste to lift hair from the root. The best length of hair for sugaring is around 3 to 6 mm long, so the sugar paste can grip it effectively.

Exact recommendations can vary depending on the product or technique used.

How long should hair be for epilating

An epilator removes several hairs from the root. Most epilators work best on short hair, typically around 2 to 5 mm long. Very long hair can be more uncomfortable to epilate, so consider trimming it first and check your epilator’s instructions for its recommended length.

How long should hair be for IPL

Before IPL treatment, hair above the skin should be removed, as close to the skin as possible. IPL sends pulses of light towards pigment in the hair. Removing visible surface hair helps the light reach hair below the skin, damaging the hair follicle and root, and stunting future hair growth.²

Tip: The Philips Lumea 9900 Pro is an at-home IPL device designed to deliver salon-like smoothness at home. It pairs with the Philips Lumea IPL app, which provides real-time, step-by-step guidance. After each session, Smart Reports give you a personalised overview to help you track your progress and improve your results over time.

You can learn more about the Lumea 9900 Pro in our dedicated guide.

FAQs about hair length for removal

Can hair be too long for waxing?

Yes. If your hair is longer than the recommended range, waxing may feel messier or more uncomfortable. Dermatologists recommend trimming hair longer than three-quarters of an inch before at-home waxing.¹ For a salon treatment, ask before trimming.

How long should the hair be for a bikini wax?

For a bikini wax, hair should generally be around 6 mm long. This gives the wax enough hair to grip for effective removal.

Do you have to shave before IPL?

Yes, you’ll usually need to shave the treatment area before using IPL, so the light can target the hair beneath the skin. Avoid waxing or epilating beforehand, as these methods remove the hair from the root that IPL needs to target. You should also avoid hair removal creams before IPL, as they can alter skin sensitivity and leave chemical residues that can disrupt the treatment.

Can I use IPL without removing hair first?

Do not leave long, visible hair on the treatment area. Remove surface hair using a method permitted in your device instructions, and make sure your skin is clean, dry and suitable for treatment.

Match your preparation to your chosen method. The perfect hair length for waxing and the best hair length for epilating both require visible growth, while IPL requires you to remove surface hair. Because your hair may grow at different speeds across your body, check the area rather than the calendar. Careful preparation can help you build a straightforward, comfortable, and consistent routine.

Sources 

¹Hair removal: How to wax, AAD 

²Are home-use intense pulsed light (IPL) devices safe?, NIH