11 hair dryer reviews: Shocking! I bought fake brand products in a live broadcast room! How to distinguish?

Here’s what happened: On this year’s Double Eleven, an employee of Dad Review purchased a Dai S hair dryer at a discounted price of 1,268 yuan in a live broadcast room .

After receiving it, I always feel that it is different from the one used by the barber shop downstairs, but I can't tell exactly where it is different.

So this hair dryer came into the hands of our electrical engineer. After careful comparison, it turned out to be a fake! (The method of distinguishing the authenticity is also summarized for everyone, remember to read to the end!)

I spent a lot of money, but what I got was a "fake". I feel like... I just want to catch the counterfeiter and give him a good beating!

For ordinary consumers, it is extremely difficult to distinguish the authenticity of products, let alone protect their rights. The store owner will close the store and run away if there is a disagreement, leaving people with no way to get after-sales service...

This time, Daddy's review tested 11 hair dryers , including real and fake Dai S, with prices ranging from 89 yuan to 2999 yuan, trying to meet the needs of all fairies and fairies. The family portrait of the samples is here——

The sample fee for this evaluation is 7003.9 yuan + the testing fee is 38000 yuan = a total of 45003.9 yuan. Based on the comparison of drying speed, wind speed/wind temperature, noise test, and real-life measurement, we finally recommend:

What are the benefits of expensive hair dryers? How much damage can hair dryers do to your hair? If you are curious, read on.

**Blowing hair can be said to be the "lifelong enemy" that prevents girls from washing their hair. **Especially for fairies with "thick and long" hair, if you want to blow dry it thoroughly, you have to hold the hair dryer for at least half an hour...

Blow-drying your hair before going to bed will not only make it oily quickly, but also cause migraines! Ahhhh, what a pain in the world it is to blow-dry your hair!

Before technology advances and an automatic shower, shampoo and blow-dryer is invented, let’s first take a look at which hair dryer can help you dry your hair quickly!

We refer to GB/T 23106-2008 Performance test method for hair care appliances for household and similar purposes. We turn each hair dryer to the maximum speed , blow air at a standard test cloth at a distance of 15 cm for 1 minute, and record the weight change of the test cloth before and after blowing to determine the amount of water evaporated .

The higher the temperature and the stronger the wind, the more water evaporates from the test cloth. The actual test results are as follows:

Except for the No. 9 Dai S imitation, in the drying speed test, **the high-speed hair dryer evaporated more than 4 grams of water, a sure win! ** Among ordinary hair dryers, No. 4 Su S is also pretty good

In the last round of tests, we can conclude that the faster the wind speed and the higher the temperature of the hair dryer, the faster the drying speed.

But in real life, we find that some hair dryers have temperatures so high that not only will they burn your scalp, but they also take half a day to dry your hair!

The hair after the blow-drying is simply "hard to describe": the hair roots and scalp are inseparable, and the hair ends are frizzy and tangled. I spent hundreds of dollars to ask Tony teacher to perm my hair, but the most beautiful moment only stayed when I walked out of the barber shop.

In order to understand the specific performance of each product from the actual use experience, we turned the hair dryer to the maximum speed, placed the wind speed and temperature meter 15 cm away from it, tested each sample 3 times, and took the maximum value. The results are as follows:

From the test results, it can be concluded that high-speed hair dryers generally have high wind speeds and low wind temperatures. While drying clothes quickly, they also ensure a comfortable user experience.

This is because compared with ordinary hair dryers, high-speed hair dryers have built-in high-speed brushless DC motors and NTC temperature control devices, which "dry" hair at faster wind speeds ; while ordinary hair dryers "dry" hair by increasing power and temperature.

If the first two evaluation dimensions affect your own experience, then the noise test also affects the "people" living with you...

One situation is that the hair dryer is so loud that the whole floor can hear it. Especially when you get up early or blow dry your hair very late, it will disturb others' rest and make everyone unhappy.

We sent 11 samples to the laboratory to test the noise level under simulated normal conditions . The data showed that ordinary hair dryers make slightly louder noise.

Some hair dryers are not very "noisy", but the sound is very "harsh".

For people who are sensitive to sound, this harsh sound is like an airplane passing by, nails scratching a blackboard, or a bicycle braking suddenly... It is uncomfortable.

It's just a simulation, I didn't turn on the hair dryer to scare the cat

If you are very sensitive to these sounds, then choose a high-speed hair dryer carefully . The laboratory tested the noise data of 11 hair dryers with A weighting in a semi-anechoic room, and the results are as follows:

The maximum noise frequency of a high-speed hair dryer is significantly higher than that of an ordinary hair dryer . From the perspective of the power spectrum, the maximum noise frequency of a high-speed hair dryer can reach 25,000 Hz, while that of an ordinary hair dryer generally ranges from 500 Hz to 4,000 Hz.

For example, the noise of an ordinary hair dryer is like the rumbling noise of a train passing by , while a high-speed hair dryer is like an airplane flying by , with a sharper sound.

Although the human hearing range is between 20Hz and 20,000Hz, the hearing range of pets (cats and dogs) at home is much wider and more sensitive than humans, so it is best to stay away from pets when using high-frequency hair dryers!

We invited 11 fairies with medium-to-long hair to collect 2 to 3 strands of hair from the same area on the top of their heads before shampooing and after blow-drying. The hairs were then sent to the laboratory for examination under an electron microscope to observe the damage caused by the hair dryer to the hair scales.

ps. Due to the particularity of the experiment, the hair taken twice cannot be exactly the same. Therefore, it cannot accurately represent the damage of the hair dryer to the hair quality. It can only be compared based on the general situation of the hair in the same area before and after washing and blow-drying, for reference only.

According to the electron microscope results, it can be seen that after using the high-speed hair dryer , the hair scales are basically in a closed state , with no obvious difference from before shampooing. (Reply to the WeChat public account dialog box: Dai S to view the revised version)

However, ordinary hair dryers with higher air temperatures will cause the edges of hair scales to curl up or even partially peel off after use; when you then use a comb or your hands to comb your hair, it is more likely to damage your hair, causing dryness, frizziness, hair loss, and other phenomena.

**However, this does not mean that ordinary hair dryers are completely useless. **In order to control variables, we only used shampoo when washing hair.

When using an ordinary hair dryer daily, try to use a low temperature setting, and add conditioners, hair masks, hair oils, etc. to protect the hair scales.

Fairies with long hair that is prone to dryness, frizz and tangles can choose to use an air cushion comb with loose teeth to take care of their hair. Never pull it hard!

We also asked the volunteer sisters to summarize their experience of the trial :

In general, if you have the budget to buy a hair dryer, then a high-speed hair dryer is a good choice;

If you just want to buy a product that can dry your hair , then a hair dryer that costs more than 100 yuan can basically meet your daily needs (hair dryers that are too cheap have the risk of catching fire, so it is not recommended to use them)

Editor | Yuanyuan

Design | Damao

Technical Support | Xiaochai

Source: Dad Review