Como escolher o melhor shampoo para o seu cabelo?

Summary

This video explains the ingredients commonly found in shampoos, breaking down their functions and debunking myths. It covers the different types of surfactants, the role of fragrances, the purpose of additional ingredients like proteins and vitamins, and how the pH balance of shampoos affects hair. The video also addresses misconceptions such as the idea of 'metal detox' and provides guidance on choosing the right shampoo based on hair type. Ultimately, the speaker encourages viewers to make informed choices and avoid falling for deceptive marketing claims.

Takeaways

• 😀 Surfactants are the main cleaning agents in shampoos, responsible for lathering and removing dirt from the hair.
• 😀 Transparent shampoos are ideal for oily or fine hair, as they don't deposit any product on the hair, providing a deeper clean.
• 😀 Pearlized shampoos, with moisturizing agents, are best for dry, thick, or coarse hair due to their ability to hydrate and smooth the hair.
• 😀 Fragrances are commonly added to shampoos, but they are mostly for scent and don't significantly affect the performance of the product.
• 😀 Additives like vitamins, proteins, and amino acids are included for marketing purposes, often in very small amounts that don't have a noticeable effect unless concentrated.
• 😀 Shampoos may contain mica for a pearly look, but it doesn't have any functional purpose beyond appearance.
• 😀 Citric acid and sodium hydroxide are used to adjust the pH of shampoos, ensuring they match the natural pH of the scalp (around 4.5 to 5.5).
• 😀 EDTA is a common ingredient used to neutralize the effects of hard water, helping shampoos work effectively by binding to minerals that could interfere with the cleaning process.
• 😀 High-end shampoos often claim to offer advanced benefits, but in many cases, their expensive ingredients are used in minimal quantities, making them less effective compared to cheaper alternatives.
• 😀 When choosing a shampoo, look for one that suits your hair type and check the label carefully to avoid being misled by unnecessary marketing gimmicks.
• 😀 The myth of shampoos with a ‘metal detox’ effect is debunked, as these shampoos typically use red colorants to neutralize greenish tones in color-treated hair, not remove metals.

Q & A

What are the main groups of ingredients found in shampoos?

Shampoos typically contain surfactants (cleansing agents), fragrances, and other ingredients such as oils, vitamins, and proteins. The surfactants help clean hair, while the other ingredients may provide additional benefits like scent or nourishment.

What is the role of surfactants in shampoo?

Surfactants in shampoo are responsible for cleaning the hair by forming foam, which helps to remove dirt, oil, and other impurities from the scalp and hair.

Why are some shampoos clear and others pearlescent?

Clear shampoos are typically designed to avoid leaving any residue on the hair, making them better for oily, fine, or sparse hair. Pearlescent shampoos, which contain mica or similar ingredients, provide more hydration and shine, making them better for dry, coarse, or thick hair.

What is the function of fragrances in shampoo?

Fragrances are added to shampoos to provide a pleasant smell, but they do not contribute significantly to the shampoo's cleaning or conditioning properties.

What are 'additives for marketing' in shampoos?

These are ingredients like natural oils, plant extracts, vitamins, and proteins that are included in shampoos in small quantities, mainly for marketing purposes. They may not have a significant impact on hair health but can attract consumers due to their perceived benefits.

What is the difference between hydrolyzed proteins and amino acids in shampoos?

Hydrolyzed proteins, like wheat protein, are larger molecules that can help repair damaged hair by filling in gaps in the hair structure. Amino acids, smaller molecules, are building blocks of proteins and can support hair health by strengthening the hair. Both can be found in shampoos but are often more effective when present in conditioners.

How does mica contribute to the appearance of shampoo?

Mica is a mineral added to some shampoos to give them a shiny, pearlescent look. It doesn't contribute to the shampoo's cleaning or conditioning properties but serves an aesthetic purpose.

What is the importance of pH adjustment in shampoos?

Shampoos often contain ingredients like citric acid or sodium hydroxide to adjust their pH, ensuring it falls between 4.5 and 5.5. This pH range is ideal for maintaining the health of the scalp and hair, as it matches the natural pH of the scalp.

What is EDTA, and how does it affect the performance of shampoo?

EDTA (ethylenediaminetetraacetic acid) is a chelating agent that binds to metals and minerals in hard water, preventing them from interfering with the shampoo's ability to form foam and clean hair effectively.

Are shampoos that claim to 'detox' the hair from metals effective?

Shampoos marketed as 'metal detox' products are often misleading. They do not actually detoxify the hair from metals. Instead, they typically use colorants to neutralize greenish tones caused by minerals, leveraging the color theory that red neutralizes green.

How can I choose the best shampoo for my hair type?

To choose the best shampoo, consider your hair type. For oily or fine hair, a clear, non-depositing shampoo is ideal. For dry, thick, or coarse hair, a more hydrating, pearlescent shampoo is recommended. Also, check the product label for ingredients that match your needs.