How many grams of hair extensions do I need?: a buying guide

Hair extensions aren’t a one-size-fits-all solution—from various colours and shades to lengths and textures, finding your perfect match takes some work. 

If you're venturing into the world of real human hair extensions, you're probably wondering, How many grams of hair extensions do I need to achieve the look I want?

You’re not the only person asking this question. Many people struggle with getting the perfect amount of hair for their desired look, but that’s where we come in. Our team at I’m So Pretty is dedicated to helping you achieve those luscious locks you’ve been dreaming of.

In this blog, we discuss everything related to volume, weight, and the amount of hair extensions you should aim for. 

Hair Extension Weights: The Basics

You may have heard the term ‘grams’ used to describe hair extensions, but what does it actually mean?

Grams refers to the total weight of hair in a set of extensions and is, therefore, used to measure how much you need to cover a full head. More grams of extensions equals fuller, voluminous hair. 

50 grams of hair extensions are usually considered a ‘half head’, while 100 to 150 grams of extensions are considered a ‘full head’.

Here’s a simple breakdown to get you started:

• 50 grams of hair is typically enough to add a light, natural boost in volume.
• 100 to 150 grams is the standard for a full set of extensions, providing a balance of length and thickness.
• 200 grams or more is typically used for those with thick hair or people looking for extra volume and fullness.

How the weight affect the look

Now, everyone’s hair is different, and the weight of your hair extensions will either make or break the final look, depending on your natural hair. 

The amount of weight you opt for will affect the overall thickness and length of the outcome, which will be different for every person. 50 grams on a person with naturally thin hair won’t look the same on someone with medium-density hair. 

If you have sensitive or weak hair, you’ll need to opt for lightweight extensions to avoid tension and excessive pulling on the scalp. But, like anything in life, it takes a bit of trial and error to find the perfect amount that works best with your hair type and face shape. 

Hair type and texture: How many grams are best for you?

The density, thickness, and curl pattern of your hair all affect the number of grams of hair extensions needed to achieve your dream look.

While a professional hair stylist should be consulted to assess your hair and create a personalised plan for your hair extensions, this is a great starting point for figuring out how much you’ll need. 

Fine or thin hair: Less is more

Sure, in most cases, the more, the better. But when it comes to applying hair extensions to thin hair, a little can go a long way. 

As fine hair doesn’t have as much bulk, you’ll only need around 50 to 100 grams of extensions to achieve natural, fuller hair. It’s best to opt for light, real human hair extensions for that perfect blend and lightweight feel.

Best types of hair extensions: Clip-ins or tape-in extensions offer flexibility and are less likely to cause damage to finer hair types. 

Thick or coarse hair: achieving fullness and balance

People with thick or coarse hair will need extensions that match that thickness to create a beautiful, blended hairstyle. 

For this reason, 150 to 200 grams is typically recommended for a full head, especially if you’re after that big, Hollywood glamour hair makeover. This will give you that thick, luxurious look without losing the natural movement and bounce.

Best type of hair extensions: Bonded extensions are longer-lasting and add natural weight and volume. For a more semi-permanent look, opt for weft extensions or tape-in extensions.

Curly or wavy hair: more grams for volume and texture

If you were blessed with effortless waves (we’re not jealous, we promise), then your extensions will need to accommodate the added texture and volume.

As curly hair tends to be denser than straight hair, you’ll need around 100-150 grams of human hair extensions. You will need to invest in good-quality extensions that match your curl pattern—extensions with a bit more weight may be needed to ensure the fullness stays consistent.

Best type of hair extensions: Clip-ins or tape-ins work well for curly or wavy hair, as you can add and remove any volume or length as you go.

Straight hair: balancing length and volume

Straight hair is more predictable and is, therefore, easier to work with. If you have straight hair, you tend to have more options for various types of extensions.

As a general guideline, 100 grams of extensions is enough to add extra length and volume, while 150 is preferred for creating that full and eye-catching transformation. Only a little extra weight is needed to add length, but you might want to opt for heavier extensions for a big transformation.

Best type of hair extensions: Clip-ins are great for special occasions, while tape-ins and wefts last for months and don’t require daily adjustments. 

Desired Look: Fullness vs. Length

We’ve already discussed the number of grams necessary for each hair type, but here are a few other tips for achieving extra length and volume.

Fullness

50 grams of extensions around the sides of your face are perfect for covering gaps and spots where hair is thinner. This is also a great amount for those who want to add highlights or create a subtle balayage. 

However, to achieve that ‘wow factor’, you’ll need to invest in at least 100 to 150 grams of hair extensions. And, of course, for those with naturally thicker or curly hair, you’re looking at around 200 grams of extensions. 

Length

1. Shoulder-length hair to mid-back (2-4 inches longer), 50-100 grams
   Adds a subtle length increase without much volume, perfect for people with medium to long hair.
2. Mid-back to waist (6-8 inches longer), 100-150 grams
   Ideal for a more dramatic length increase with balanced thickness for people with fine or mid-length hair.
3. Waist-length to hip-length (10-14 inches longer), 150 grams
   It achieves that longer, fuller look without sacrificing movement or texture, making it a great choice for people with naturally thick hair.
4. Past hip-length (16+ inches longer), 150-200 grams
   For the ultimate in length and volume, providing a thick and luxurious mane.

Love your hair with I’m So Pretty

When it comes to buying the perfect amount of hair extensions for your desired length and volume, one important thing to remember is that authenticity is better. 

By investing in 100% real human hair extensions at I’m So Pretty, you’re already securing yourself a beautiful and long-lasting hair transformation. 

Why settle for anything less when you can experience the luxury of thick, long, and natural-looking hair? Shop now and find your perfect match—because you deserve hair that’s as pretty as you are!