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Shampoo – do we really need to use it?
Buying shampoo can be overwhelming – there are so many _____ to choose from, across a huge _____ _____ prices. Some brands promise to _____ and _____ our hair, while others promise to _____ and add _____ . But are any of these claims true? Do we even need shampoo at all?
Since long before shampoo was invented – some say in India – our bodies have been producing _____ – an _____ -_____ _____ . Sebum stops our skin from getting dry, manages the health of our _____ and makes our hair _____ . But it also collects dirt, and, if left untouched for too long, sebum can cause our hair to become _____ . There are no disadvantages from a health perspective to letting our hair be greasy, says Eleanore Richardson, Trichologist at Fulham Scalp and Hair Clinic, but many people choose to wash their hair regularly for _____ reasons.
And so we reach for the shampoo bottle. Shampoos contain a group of _____ called _____ . They grab the dirt and grease from the _____ of our hair, meaning when we _____ away the shampoo, we also wash away the grease and dirt. But, as Laura Waters, who’s a Professor of Pharmaceutical Analysis in the School of Applied Sciences at Huddersfield University, points out, ‘some surfactants work too well’ and take the natural oils out of the hair, as well. More expensive shampoos may contain less _____ surfactants, but – adds Laura Waters – the type of shampoo doesn’t really matter. ‘It’s on our hair very briefly and gets washed away’. It’s the _____ and _____ _____ that we use after the shampoo that make a bigger difference to the _____ and feel of our hair.
Of course, the more we put onto our hair, the more we need to _____ it off, creating a vicious circle. So, yes, it seems we do have a need for shampoo, but we also shouldn’t expect it to be a _____ _____ . And, finally, next time you’re in a shampoo aisle, remember that hair is made up of dead protein cells and that, sadly, not even the most expensive shampoo can bring them back to life.
Shampoo – do we really need to use it?
Buying shampoo can be overwhelming – there are so many brands to choose from, across a huge range of prices. Some brands promise to repair and nourish our hair, while others promise to strengthen and add volume. But are any of these claims true? Do we even need shampoo at all?
Since long before shampoo was invented – some say in India – our bodies have been producing sebum – an oil-like substance. Sebum stops our skin from getting dry, manages the health of our scalp and makes our hair shiny. But it also collects dirt, and, if left untouched for too long, sebum can cause our hair to become greasy. There are no disadvantages from a health perspective to letting our hair be greasy, says Eleanore Richardson, Trichologist at Fulham Scalp and Hair Clinic, but many people choose to wash their hair regularly for aesthetic reasons.
And so we reach for the shampoo bottle. Shampoos contain a group of chemicals called surfactants. They grab the dirt and grease from the surface of our hair, meaning when we rinse away the shampoo, we also wash away the grease and dirt. But, as Laura Waters, who’s a Professor of Pharmaceutical Analysis in the School of Applied Sciences at Huddersfield University, points out, ‘some surfactants work too well’ and take the natural oils out of the hair, as well. More expensive shampoos may contain less harsh surfactants, but – adds Laura Waters – the type of shampoo doesn’t really matter. ‘It’s on our hair very briefly and gets washed away’. It’s the conditioners and styling products that we use after the shampoo that make a bigger difference to the texture and feel of our hair.Of course, the more we put onto our hair, the more we need to cleanse it off, creating a vicious circle. So, yes, it seems we do have a need for shampoo, but we also shouldn’t expect it to be a miracle cure. And, finally, next time you’re in a shampoo aisle, remember that hair is made up of dead protein cells and that, sadly, not even the most expensive shampoo can bring them back to life.
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1. brand /brænd/
Definition (EN): A name, symbol, or design that identifies a product and distinguishes it from others.
Định nghĩa (VI): Một tên, biểu tượng hoặc thiết kế để nhận diện một sản phẩm và phân biệt nó với các sản phẩm khác.
Examples:
2. repair /rɪˈpeər/
Definition (EN): To fix something that is broken or damaged.
Định nghĩa (VI): Sửa chữa một thứ gì đó bị hỏng hoặc hư hại.
Examples:
3. nourish /ˈnʌr.ɪʃ/
Definition (EN): To provide food or nutrients to help something grow and stay healthy.
Định nghĩa (VI): Cung cấp chất dinh dưỡng để giúp phát triển và duy trì sức khỏe.
Examples:
4. strengthen /ˈstreŋ.θən/
Definition (EN): To make something stronger.
Định nghĩa (VI): Làm cho một thứ gì đó mạnh hơn.
Examples:
5. volume /ˈvɒl.juːm/
Definition (EN): The amount of space something occupies or the thickness/fullness of hair.
Định nghĩa (VI): Lượng không gian mà một vật chiếm hoặc độ dày, độ phồng của tóc.
Examples:
6. sebum /ˈsiː.bəm/
Definition (EN): The natural oil produced by the scalp.
Định nghĩa (VI): Dầu tự nhiên được tiết ra từ da đầu.
Examples:
7. oil-like substance /ɔɪl laɪk ˈsʌb.stəns/**
Definition (EN): A substance that has properties similar to oil, often referring to sebum.
Định nghĩa (VI): Một chất có đặc tính giống dầu, thường dùng để chỉ bã nhờn.
Examples:
8. scalp /skælp/
Definition (EN): The skin on the top of the head where hair grows.
Định nghĩa (VI): Da trên đỉnh đầu, nơi tóc mọc.
Examples:
9. shiny /ˈʃaɪ.ni/
Definition (EN): Reflecting light, bright and smooth in appearance.
Định nghĩa (VI): Phản chiếu ánh sáng, sáng bóng và mượt mà.
Examples:
10. greasy /ˈɡriː.si/
Definition (EN): Oily or covered with an excess of oil.
Định nghĩa (VI): Bóng dầu hoặc có quá nhiều dầu.
Examples:
11. aesthetic /esˈθet.ɪk/
Definition (EN): Relating to beauty or appearance.
Định nghĩa (VI): Liên quan đến vẻ đẹp hoặc hình thức bên ngoài.
Examples:
12. chemical /ˈkem.ɪ.kəl/
Definition (EN): A substance used in or produced by a chemical process.
Định nghĩa (VI): Một chất được sử dụng hoặc tạo ra trong quá trình hóa học.
Examples:
13. surfactant /sɜːˈfæk.tənt/
Definition (EN): A substance that helps remove dirt and oil by breaking the surface tension of water.
Định nghĩa (VI): Một chất giúp loại bỏ bụi bẩn và dầu bằng cách phá vỡ sức căng bề mặt của nước.
Examples:
14. surface /ˈsɜː.fɪs/
Definition (EN): The outer or top layer of something.
Định nghĩa (VI): Lớp ngoài hoặc trên cùng của một vật thể.
Examples:
15. rinse /rɪns/
Definition (EN): To wash something quickly with water.
Định nghĩa (VI): Xả sạch hoặc rửa nhanh bằng nước.
Examples:
16. harsh /hɑːʃ/
Definition (EN): Strong, aggressive, or too intense.
Định nghĩa (VI): Mạnh, gắt, hoặc quá khắc nghiệt.
Examples:
17. conditioner /kənˈdɪʃ.ən.ər/**
Definition (EN): A hair care product used to improve hair texture and moisture after shampooing.
Định nghĩa (VI): Một sản phẩm chăm sóc tóc giúp cải thiện kết cấu và độ ẩm sau khi gội đầu.
Examples:
18. styling product /ˈstaɪ.lɪŋ ˈprɒd.ʌkt/**
Definition (EN): A product used to shape, hold, or improve the appearance of hair.
Định nghĩa (VI): Sản phẩm dùng để tạo kiểu, giữ nếp hoặc cải thiện vẻ ngoài của tóc.
Examples:
19. texture /ˈtekstʃər/**
Definition (EN): The feel or appearance of a surface, especially how smooth or rough it is.
Định nghĩa (VI): Cảm giác hoặc vẻ ngoài của một bề mặt, đặc biệt là độ mượt hoặc gồ ghề.
Examples:
20. cleanse /klenz/**
Definition (EN): To clean something thoroughly, especially the skin or hair.
Định nghĩa (VI): Làm sạch một cách kỹ lưỡng, đặc biệt là da hoặc tóc.
Examples:
21. miracle cure /ˈmɪr.ə.kəl kjʊər/**
Definition (EN): A treatment or solution that seems to work amazingly well, often too good to be true.
Định nghĩa (VI): Một phương pháp chữa trị hoặc giải pháp có vẻ hiệu quả một cách kỳ diệu, đôi khi khó tin.
Examples: