How to get thicker hair and keep it feeling that way, according to experts

Whether you want to add bounce and volume to your naturally fine hair or combat thinning, we've enlisted the help of trichologists and hairdressers to share their tips for how to get thicker hair.

Now, while often used interchangeably, fine and thin hair are not the same thing. To put it simply, "fine hair is about the size of the diameter of a single strand of hair," explains pro hairdresser and founder of MD London, Michael Douglas. "Thin hair is the amount of strands of hair you have.” Keep this key difference in mind when shopping for the best shampoos for fine hair or mood-boarding hairstyles for fine hair. When it comes to adding body to the look and feel of your strands, the approaches are also different, but there are still ways to achieve fullness.

If your hair is naturally fine, using the correct products can make it look thicker, but you won’t be able to actually increase its density. If it's thinning, then you can create the illusion of more strands in the short term, as well as get to the root of the problem in the long term. As for how, the experts have shared 12 helpful tips, spanning your diet to your blow-dry routine, to help ward off unnecessary damage and add oomph to your hair.

How to get thicker hair, according to experts

Now, before we dive into all the tips and tricks to achieving thicker and stronger strands, understanding whether you have fine or thin hair is key because, as mentioned, they are different.

"Fine hair refers to a specific hair texture characterised by the diameter of individual hair strands," elaborates Anabel Kingsley, Brand President and Consultant Trichologist at Philip Kingsley. "It often has a small diameter, which means the individual strands are thinner and more delicate compared to the other hair types. Fine hair often lacks volume and can appear limp and flat, especially when it grows long."

"Hair thinning is different," Kingsley continues. "It refers to reduced hair density and is medically termed Androgenic Alopecia or Female Pattern Hair Loss. It is a genetically predisposed, progressive type of hair loss that happens very slowly and is not always accompanied by increased hair shedding, which means it can be hard to spot in the early stages. It is estimated that at least 15% of the volume is lost before reduced volume becomes apparent." Along with your genes, thinning hair can also be caused by fluctuating and decreasing hormones (especially common around the time of menopause), as well as things like stress and poor diet.

As we have established, the two are not the same, but there are ways to achieve the appearance of thickness in both cases, as the pros have outlined below...

1. Take care of your scalp

Interested in how to get thicker hair? You need to look at the bigger picture and think beyond your strands. We rarely pay much attention to our scalps, but creating a healthy environment is key to encouraging hair growth. "Looking after your scalp and ensuring your hair is in tip-top shape are important," explains Kingsley. "Scalp health had a profound influence on hair health. After all, one supports the growth of the other. Weekly targeted scalp masks and scalp toners are fantastic in this instance."

Scalp scrubs teamed with scalp massage techniques are great too and will help to dislodge follicle-blocking dead skin cells that can prevent new hair from making its way through.

2. Consider your diet

Eating well will improve your all-round well-being, but unfortunately, our hair is last in line for the good stuff. If you’re poorly or experiencing bad gut health, it gets pushed even further back in the queue, as your body prioritises the organs or areas of the body that need nutrients most. This is why you may notice a knock-on effect on your hair when you’ve been reaching for takeaways and sugary snacks instead of nutritious meals.

"Eating a healthy, balanced and varied diet is key," says Kingsley. "The impact that nutrition has on hair growth should not be underestimated. As hair is a non-essential tissue, and hair cells are the second fastest growing cells your body makes, its nutritional requirements are very high." For the reasons we just mentioned though, "it is also quite hard to give your hair what it needs through diet alone," Kingsley continues. "This is why I often recommend supplementing a healthy diet with nutritional supplements." In your quest for how to get thicker hair, look for supplements containing iron, biotin, zinc and proteins.

3. Re-think your blow-dry

Learning how to blow-dry hair and create an at-home bouncy blow-dry is easier than you might think, and can be achieved with minimal effort and without arm ache. The key is adding volume at every stage of the process, rather than focusing on smoothing and straightening.

"Apply a volume-boosting spray to your roots and pre-dry your hair upside down, lifting your roots with your fingers," explains hairstylist and Maria Nila Brand Ambassador Diego Marinda. "Then you can start using your round brush and hair dryer to maximise overall volume." If you find it fiddly to balance a brush and a dryer at once, the best hair dryer brushes are a great two-in-one solution when working on how to get thicker hair.

4. Choose curls and waves over straight styles

Hairstyles for straight hair look great when you’ve got a lot of hair to work with, but if your hair is fine or thinning, then they can make your locks look limp. If you want to know how to get thicker hair, the key is in curls and waves – from curl types 2a all the way to 4c.

"Curls and waves are a must," says Marinda. "The movement helps to create visual depth, which makes the hair appear thicker. If you struggle with fine hair, a good quality curling iron and a great heat protection spray will be your best hair friends." If your strands are stubbornly straight and you don’t want to rely on heat, then try some heatless curl techniques and learn how to curl hair overnight.

5. Switch up your parting

Of all the tips on how to get thicker hair on this list, this one is the easiest. Centre partings have been popular for a while now but will do you no favours if you want your hair to look thicker. By dividing the hair in this way, it can appear flat on both sides. "I usually suggest a side parting, which will help to volumise the top of the hair more than a middle parting," advises hairstylist Michael John Guzzon.

The other option is a diagonal parting. "I think diagonal parting, where the parting starts on one side at the front and goes diagonal to the top of the head, works well," says Douglas. "This allows the hair to be distributed more evenly on both sides of the head." Yet, unlike a centre parting, you’ll still get a level of lift in the process.

6. Stock up on texturising spray and dry shampoo

Good styling products make all the difference to your finished style, especially when you’re focusing on how to make hair look thicker. "Dry shampoos and texturising sprays are great for putting a bit of body and thickness in the hair," advises Douglas.

Apply sparingly, though, as if you’re too heavy-handed, then fine and thin hair can quickly become overwhelmed with product, giving it a slick look and an unnatural, sticky texture – quite the opposite of what you were hoping to achieve.

7. Lay off the heat tools

When used too frequently, or at too high heat, even the best hair dryers, best hair straighteners and best curling irons can damage your hair. Heat styling weakens the hair, leading to split, frazzled ends, as well as breakage further up the strand – none of which make hair look thick and healthy.

"Hair can appear thin for a number of reasons, which are most commonly shedding and breakage," advises Kingsley. "If you regularly mechanically process your hair it can be more susceptible to damage and therefore breakage."

8. Lose the layers – or don’t

Adding layers to your hairstyle is the process of cutting the top sections of your hair shorter than the section beneath. Some experts recommend them to make hair look thicker, while others prefer cuts that are all one length. “On long hair, long layers and a short face-framing fringe or curtain bangs will give the illusion of thicker hair,” advises Miranda. “For medium-length hair, a shaggy hairstyle like a wolf cut with short or medium bangs can create depth and a thicker appearance.”

Michael Douglas, however, is on the other side of the layers fence. “Fewer layers and a more one-length style will be better,” he says.

9. Consider going shorter

If you’re finding that your hair is thinning, it might be time for The Big Chop. When your hair is long, sparser areas are more noticeable, and it can make your lengths look scraggly. It can be especially visible when your hair is tied up too. “It’s much easier to disguise thinning hair when it’s short, think a pixie crop or a short, feathery cut,” says Douglas. “I try and avoid long hair altogether when creating the illusion of thickness and go for hair above the shoulders or shorter.”

If you’re nervous about going shorter, remember you don’t have to go the whole hog all at once. Dip your toe in by taking a couple of inches off every time you visit the salon. This way, it’ll be more of a gradual transition towards a short hairstyle rather than one dramatic transformation.

10. Avoid block colours

Always opt for a full-head tint rather than faffing around with foils? It’s certainly easier (and often cheaper) but having hair that’s all one shade can emphasise and draw attention to its lack of fullness or areas of thinning.

"I tend to encourage clients away from block colours, especially dark tones, firstly as many skin tones struggle with this, and secondly as if your hair is particularly thin or a little greasy the show through at the root or lengths is more apparent," explains Miranda.

11. Colour clever

Colouring your hair is not just a way to cover greys or switch up your look, but can actually be used to make hair look thicker. This is first, as "colour generally thickens each strand of hair as the hair shaft swells when coloured," explains Douglas. That means that fine hair will instantly look fuller after it’s been dyed – a bit like filler for your hair. Secondly, techniques that use a blend of tones (such as highlights, babylights and balayage) will add depth to an otherwise singular colour.

"Having a mixture of dark and light tones is a good way to create the appearance of texture and thickness in the hair," Douglas continues.

There’s also the debate about whether brunette hair or blonde hair looks thicker. "Darker hair tends to reflect the light better, so can look thicker than blonde, as light passes through blonde hair, which can make it look finer and thinner. The problem though, is that darker hair can emphasise the white scalp of a parting, and therefore gives the overall appearance of thinning.

"If you’re worried about your visible parting, then going blonder is maybe better, but if it’s overall thinning you’re concerned about, then a darker colour can create the illusion of thickness. It really is horses for courses though. I would have to see a person to make a judgement on the best thing to do." Ask your hairdresser for their expert opinion on the best approach for you.

12. Look after your hair

In addition to cutting down on heat styling, limiting the use of harsh colourants and chemicals on your hair is also important when understanding how to get thicker hair. "It’s really important to take care of your hair by avoiding colours with peroxide and ammonia that dry and thin the hair," advises Guzzon. "In our salon, for example, we only use colours that don’t damage the hair."

If this is a concern for you, speak to your hairdresser about the kind of products they use next time you visit, or book a consultation to discuss your options in advance. Regularly using the best hair masks or investing in a treatment for damaged hair like Olaplex or K18 can help to bring hair that’s been overprocessed back from the brink.