Definition: hover diffuse. Volume: scrunch diffuse. Elongation: diffuse with comb

As someone with fine thin hair, I feel this in my bones

My hairstylist left the state, I have severe trust issues so I've been trying to cut my hair myself. I have a V shape and long layers so I tried this haircut to just trim the ends. It came out alright, not as good as my hairstylist would have done but acceptable. I still recommend you go to a hairstylist but for anyone like me, this might help. I trimmed very little this first time, I'm planning to trim just a little bit over the next few washes as I get used to it, no more than maybe 2 inches total.

1. Shampooing every day is bad for your hair

Not all hair types can handle shampooing every day but it isn't bad for everyone. Shampooing is meant to cleanse the scalp. It prevent yeast from causing inflammation, dandruff, and hair loss. This buildup needs to be removed.

2. Shampoos will make my hair grow

No such thing as a shampoo that will make your hair grow. Make sure that you get rid of the oily buildup with shampoo but there are no ingredients that can grow your hair. Medicated shampoos don't grow hair or affect the hair cycle, they help reduce inflammation. Shampoos with protein marketed for thin hair can make hair appear thicker but it is not getting thicker.

3. Dry hair needs moisture

Moisture (water) makes hair frizzy and brittle and prone to breakage. Humidity can cause breakage because of all the moisture (water) content in the air. You want instead products that help coat the hair and keep it smooth and prevent it from absorbing so much moisture. You need conditioning products for hair. Wet hair is very delicate. Coconut oil can help reduce hygral fatigue when you apply before your shower.

4. You need to trim the hair every 6 weeks for it to grow and avoid split ends

It's not right for everyone. Trimming ends does not affect how much hair comes out of your follicle. If you have split ends, you will need trims to avoid breakage. Trims don't prevent split ends, trims gets rid of them. Use deep conditioning products and avoid too much heat to prevent split ends.

5. Your hair gets used to your shampoo and conditioner

Products have ingredients that make them unique for a specific outcome. Your hair does not get used to it. Your hair might need a change if the product isn't giving you results because of the change in environment, etc. But it is not because your hair gets used to it.

Taken from:

https://www.instagram.com/p/CZNZ5EoIqNx

Heat can crack and fray hair by destroying the proteins in hair. The vibrancy will fade, tone will change, there will be a loss of pigment, it will lose shine, and hair will become dull. Heat damage will also cause split ends and breakage.

Straightening and curling irons can go 360-450°F or 185-230°C. Water boils at 212°F or 100°C. Hair can hold 30% of its weight in water. When there is excessive heat (like above water's boiling point) applied to hair that is still wet, the water will burst out into steam and greatly damage the cuticle.

Benefits of using heat: easier manipulation, can set styles with better results, and efficiency.

How to use heat safely:

• use a diffuser for indirect heat

• lower the heat setting

• use a hair dryer with excellent temperature control that does not go above 212°F or 100°C

• squeeze out all water by towel drying before using heat

• use the hover diffuse method

• use a heat protectant (like products with PVP/DMAPA acrylates copolymer, quaternium 70, hydrolyzed wheat protein, and especially silicones)

Unless you are using temperatures above water's boiling point (212°F or 100°C), heat damage is less of an issue

Before using irons feel if hair is still wet. If hair is cold when you touch it, it is still wet. Use irons on dry hair only.

If you have fine hair, use lower heat, heat protectant, and products with protein in them to strengthen hair

What everyone gets wrong with shampoo

Lots of people say you have to use sulfate-free shampoo to avoid damaging or stripping your hair. There also people who say you have to use shampoo with sulfates to get your hair clean.

They are both wrong.

Academic hair science is a mess. Hair is very diverse. Different hair reacts differently to ingredients. Ingredients work similarly on skin but with hair, ingredients work differently.

If 100 people use glycerin on their skin, you might have 60 people’s skin get more hydrated and improve, 20 people’s skin stays around the same, the final 20 might get worse for some reason – like the glycerin helped some other ingredient penetrate and their skin got irritated, or they have an allergy. There’s still complexity, but you wouldn’t have half the people’s skin dry out more. But that’s kind of how it is with hair.

Variation in curl pattern can also affect how ingredients work.

When it comes to wet vs dry detangling, water makes hair weaker inside and cuticles raise so you should detangle when dry. At least on straight hair. But on curly hair, hair sticks less to each other (like spiral pasta vs spaghetti pasta) and the weakening bonds makes it less damaging and results in less breakage. But even then, we still don't know everything (which is better for wavy hair, what if you use a brush or comb, what if you bleach your hair, what if your hair is longer, etc.). There's a lot of variables.

Hair science is really sparse. You can't generalize hair. Even things like humidity can change the results. The structure of hair as we know it is still evolving and there isn't a lot of consistency in terminology.

For example, around the late 90s, some hair scientists decided that half the protein in hair wouldn’t be called keratin anymore. But not everyone follows this. You’ll see things like “hair is 80% keratin by mass” in a paper from 2017. It’s clear they’re using the old definition – but if a paper says “we concluded that this ingredient works on keratin in hair”, what do they mean by “keratin?"

Hair products aren't about individual ingredients, it is about the overall formulation. Sulfates usually refers to sodium lauryl sulfate and sodium laureth sulfate, which are surfactants. Surfactants help break up oil and mingle with water so you can rinse it. Sulfates have sulfate heads, the tails are similar to other surfactants.

These 4 diagrams show 4 different ways that shampoos clean at a microscopic level – each diagram goes from left to right. The pink tadpoles are the surfactants.

You can see that the surfactants are working together to clean the hair. This is called a supramolecular process, where molecules are interacting without going through a chemical reaction.

And all 4 of these are probably happening on your hair at the same time, to different extents – there’s probably more mechanisms still to be discovered.

How much of each one is happening depends on the formula of the shampoo and what type of stuff you are cleaning off.

If you look at the ingredients, you'll have 3 or more surfactants. If you change the ratio of the ingredients or swap one of these surfactants with something else, the shampoo will work differently. Plus there's other ingredients like polymers to take into account. The texture of the shampoo and opening of the bottle changes how it disperses and spreads as well.

Even just checking the pH of a product isn't the whole picture when it is so complex.

Cosmetic formulators spend a lot of time just doing trial and error, making formulas and trying them out. Changing little things about the formula causes big changes.

Good Housekeeping did a test with 10 shampoo and conditioner pairings. Some had sulfates and some didn’t. The set that stripped hair dye the least had sulfates – it was Tresemme’s Keratin Smooth Color set.

Formulators know that people who go for sulfate free want a gentler shampoo so that's what they aim for when making the formulation. They know there’s all these widespread myths about sulfates being harsh – they’ve been around since the 90s. Adding sulfates doesn't mean it will strip more. There’s a good chance that if you grab a random shampoo with sulfates, and a random shampoo without sulfates, the one with sulfates will clean better because of product design and that's how they were formulated. It’s not because just adding sulfates automatically makes shampoos strip more. They might have also added other ingredients to make the hair feel cleaner.

How well it foams doesn't tell you how well it cleans. How well something foams depends on how a formula interacts with air and water to stabilise a thin stretched out film of water. Cleaning is about how it interacts with oil and dirt. But if something doesn’t foam when we use it, we tend to feel it isn’t cleaning well. It’s just a psychological thing.

How well a shampoo cleans is complicated. Bottom line: Sulfate-free and sulfate-containing don’t really mean much. How well a shampoo cleans is too complicated to predict that easily.

It’s much more useful to look at what the shampoo is telling you. If it says “clarifying” it’s a shampoo designed to clean your hair better, if it says “colour protection”, it can have sulfates and still strip dye less. It’s also really useful to look at reviews from people with similar hair to you and try a sample before buying.

Prep, Style, Finish

• Prep: Leave-in conditioner, leave-in treatment, serums, primers
• Style: products (mousse, foams, creams, custards, gels, pomades, hairsprays), techniques
• Finish: hair oil, serum, hairspray, texture spray

Rule of thumb: the amount of product you apply is how much hair is on your hair (density), cup your hair (ok symbol) and that is how much you should apply but if you have shorter/longer hair you will need to adjust

If a product is thicker, start less and work up.

Damp styling: quicker dry time, more volume, less clumping

Brush product through to evenly distribute it throughout hair

When you wring your hair, you can see how much is in there. Don't drown it in product (becomes white). Apply evenly root to tip.

Keep spray bottle with water in hand

Section hair for the amount of volume you want. Mell sections hair in two, a bottom and top section.

Style 90 degrees off scalp (half base) and in vertical sections.

If hair is healthy with good elasticity then brushes are a good way to define curls

Ribbon technique: using tension while brushing by sandwiching hair between brush and hands. Should not hurt or pull. It will look straight but curls will bounce back, you can scrunch to encourage bounce back.

Gels give longevity but sometimes brushing it through makes it stringy and crispy. So apply it after brush styling, smoothing down /glazing (praying hands)

Make sure hair is evenly wet from root to tip. Rewet top section after doing bottom section.

If you like side parting, style top with v back method (dividing sections into V shapes). If section is very large, brick laying can be done (doing a V section and then a straight/horizontal section, and then V again, etc.) Smaller sections if hair is more coily, larger sections if hair is more wavy. And then finger coil or brush back bangs

If your towel is more damp then dry, it will absorb more water like a sponge. Squish out extra water with towel, be gentle.

Diffusing: When you scrunch diffuse you are disturbing the curl pattern, curls have not set yet, encouraging a lot of shrinkage (maybe too much), and drying out the ends faster than the roots so roots will be frizzy and wet. Instead hover diffuse. Once there is a cast, then you can scrunch with the blow dryer.

If hair is cold it is still damp. Once hair is fully dry, then add the finishing products like hair oil, serum, hairspray or texture spray. Then you can smooth out the gel cast and separate any clumps to add volume

I have fine hair and am looking into trying more products. I'm a bit of a product junkie, always looking for a product that performs better than my current ones.