How much shampoo per wash? [Archive]

How much shampoo per wash? [Archive]

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sapphire-o

I've always been curious about how much shampoo one should use per wash. So, I went ahead and actually measured the amount. I found that I use about 15 grams of liquid shampoo per wash, which is roughly half an ounce. For a shampoo bar, it was about 5 grams. By these calculations, a 300ml liquid shampoo bottle would last 20 washes, and a 100g shampoo bar would also last the same 20 washes. How do you measure yours?

Diana Prince

I use between 5ml and 15ml of shampoo, depending on the formula and whether I double-wash. If my scalp is itchy, I often shampoo twice.

missmelaniem

I usually take a quarter-sized amount of shampoo, dilute it in a separate bottle, and then spread it over my scalp. It helps distribute the shampoo better and produces a good lather. If I've used oils or it has been a while since I last washed, I might shampoo twice.

JasminxCat

I admit, I probably use too much because I love a good lather. I use two quarter-sized dollops, one for the front and one for the back, and then work it through the rest of my hair. I also usually condition twice.

Cg

Typically, I use 0.2 oz (about 6 ml) for the first wash and 0.1 oz (around 3 ml) for the second. The first wash usually doesn't create much lather, so I focus on letting it soak through my hair. The second wash focuses on the scalp, providing plenty of suds. Everyone's hair is different, so it really comes down to personal preference and hair type.

lapushka

I tend to use around 50 ml per wash. I do a thorough weekly wash, applying shampoo in sections: first to the back, then the top, and finally to both sides. I rinse and repeat the process to ensure my scalp is clean, particularly because I suffer from Seborrheic Dermatitis.

foreveryours

My shampoo comes in liter bottles and lasts about eight weeks. Washing twice a week and shampooing twice each session, I use roughly one ounce per wash.

Bri-Chan

Shampoo tends to last me quite a while. For more creamy textures, I go through about half a tablespoon per wash, whereas a gel-like shampoo lasts much longer. On average, I use between 7 ml and 20 ml per wash, depending on the shampoo's consistency.

Jane99

I don’t keep track of how long shampoo lasts. I use a half-dollar-sized amount each time, but I have multiple bottles and other people use them too, so it’s hard to measure precisely.

Solovey

I have very oily, thick hair and hard water, so I use quite a bit—probably between 40 to 60 ml every other day. I go through shampoo pretty quickly!

MusicalSpoons

The longer I go between washes, the more shampoo I need. I usually use two large palmfuls, dividing it into sections. One and a half palmfuls for the first wash, and a half for the second.

embee

When I used shampoo, I would mix a squirt into a tumbler of warm water and pour it over my head. This method allowed me to avoid using conditioner as I didn’t strip all the oils from my hair. It worked well for my thin, fine, and straight hair.

Kat

I don’t measure precisely. If my hair feels oily, I'll use more. I’ve found shampoo bars don’t last as long as liquid shampoo for me, despite what they claim.

illicitlizard

I’ve never measured, but I’d estimate that I use about 20-30ml of shampoo per wash. For co-washing, which I do occasionally, I use even more—up to 60ml—since it doesn’t sud as easily and is harder to distribute.

missmelaniem

I love this thread and learning what others do.

Estrid

I use a shampoo pump and go through about three pumps per wash: one for the front, one for the sides and top, and one for the back. I’ve tried using less but always end up using more to ensure my hair is clean.

mermaid lullaby

I shampoo the front of my hair, then flip it over and shampoo the back and sides. I find that the one-tablespoon recommendation isn’t enough for me.

lapushka

I tried the amount hairdressers recommend but it was never enough. I use three big globs and that’s the exact amount I need, even though it might seem like a lot. After a weekly wash, my hair feels really clean.

Finda

I also find that lather is easier to distribute through my hair. A small amount just never covers it all, especially in thicker sections. More shampoo ensures complete coverage.

illicitlizard

Higher-end salon products supposedly need less shampoo, but I’ve always found that both high-end and low-end products require about the same amount. Sticky patches often result from not using enough shampoo.

Wendyp

I use a big handful of sulfate-free shampoo. I only shampoo once, focusing on the scalp, and let the suds clean the rest of my hair during the rinse.

shelomit

The amount of shampoo I use varies by brand. Some need watering down to distribute evenly. For daily use, I go through a bottle much more slowly since I wash my hair less frequently.

EdG

I use about two tablespoons. I mix the shampoo in a large plastic container with water before applying it to my hair to avoid dryness.

blackgothicdoll

I wash my hair in sections, using very small amounts for each section. On average, I probably use two coin-sized amounts entirely, which covers my scalp and suds through the ends of my hair.

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lapushka

I don’t believe high-end products need less shampoo as recommended by salons. I always end up applying plenty of shampoo to avoid sticky patches, particularly in thicker hair sections.

sipnsun

Currently, I’m using Calia's moisturizing shampoo, and I scrub twice each time, using about a tablespoon per wash. However, with other brands, I get by with one wash and less product.

Suortuva

I rarely use more than a teaspoon of shampoo. My shampoos last forever, but I use a lot of different conditioners because my hair is thin and very dry.

Kat

Like many here, I find the recommended small amounts never cover the area I need. Regardless of the shampoo’s quality, a larger amount is often necessary for complete coverage.

illicitlizard

Agreed. Salons may use a lot of shampoos but suggest less for home use. Both high-end and cheap shampoos need a reasonable amount to work effectively.

lapis_lazuli

I use at least a palmful of shampoo every shower because my shampoo doesn’t produce suds. Ensuring that my scalp gets enough shampoo is essential for me.

MusicalSpoons

I also use a lot of shampoos. For the first wash, I lift and wet only my roots to avoid the full weight of wet hair. The second wash is easier because the hair is cleaner and less heavy.

Kat

My shampoo doesn’t produce suds, so I find myself using more to ensure my scalp and hair are thoroughly cleaned. It’s challenging, especially with longer hair.

lapushka

My mom uses a very small amount of shampoo due to her thin hair. I, on the other hand, need larger amounts due to dense hair. After a week of not washing, there’s significant build-up to remove.

Kat

Yes, I only wash my hair once a week, which might be considered "dirty" by some, but I find that washing less frequently actually works better for my hair's health.

lapushka

I also wash once a week due to Seborrheic Dermatitis. Skipping washes isn't an option as it leads to flare-ups. However, I do find that a thorough wash once a week works best for my hair and scalp.

sapphire-o

I use a wall dispenser that provides a dime-sized amount per pump. I usually use about four pumps for the first wash and three for the second. I need to ensure all sections of my head are clean.

Finda

I had to use more shampoo to properly distribute it. Washing in sections and using a generous amount was the solution for my thicker hair to avoid sticky patches.

shelomit

When I need to shampoo my entire head, I find it takes a full handful of shampoo. This ensures both my scalp and the lengths are thoroughly cleaned.

ExpectoPatronum

My hair is dense at the scalp, so I divide it into three sections, applying a small glob to each. I usually only shampoo my scalp, letting the suds clean the rest of my hair.

Kat

I find that a week is the point where my hair starts to look oily and needs washing. Although I don’t wash frequently, my routine works well for hair health.

lapushka

Skipping washes isn't an option due to Seborrheic Dermatitis. I wash my hair once a week. My mom helps with the process since it can be challenging with dense hair.

lapis_lazuli

Sectioning is essential. I wash my hair inverted into the sink to make my scalp accessible. This method allows me to clean thoroughly despite the weight of my hair.

MusicalSpoons

Pre-oiling and conditioning before washing help manage my hair's weight. I focus water on the roots first to make the hair easier to handle during washing.

Kat

I find I need to wash all of my hair periodically. While scalp washes work temporarily, my hair's length requires occasional full washes to avoid dryness.

cutie-pie

I use about a tablespoon of shampoo diluted in a bowl of water. This method helps prevent my hair from becoming overly dry.

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