Kupas tuntas hyaluronic acid

Summary

In this video, Dr. Shireen Idris debunks the common myths surrounding hyaluronic acid (HA) in skincare. She explains that while HA is praised for its hydrating and plumping properties, many of the claims are misleading. Despite its use in various products, HA's effectiveness is limited due to its molecular structure, which prevents deep absorption into the skin. Dr. Idris highlights how HA can actually cause dehydration and irritation over time, especially when used without the proper moisturizing agents. She calls for more transparency and understanding of how HA truly works, encouraging viewers to reconsider its place in their routines.

Takeaways

• 😀 Hyaluronic acid is commonly found in many skincare products, but its true effectiveness is often overstated due to marketing claims.
• 😀 Despite being labeled as a great humectant, hyaluronic acid can draw moisture from the skin under low humidity conditions, leading to dehydration over time.
• 😀 The size of hyaluronic acid molecules (high vs. low molecular weight) affects their ability to penetrate the skin, with low molecular weight HA not effectively reaching deeper layers like the dermis.
• 😀 High molecular weight hyaluronic acid, which is naturally found in the skin, cannot penetrate the epidermis and stays at the surface.
• 😀 Many skincare products use sodium hyaluronate (the salt form of hyaluronic acid) as a cheaper alternative, which may not provide the same benefits as pure hyaluronic acid.
• 😀 Hyaluronic acid’s primary function in the skin is to provide structural support and promote wound healing, not to hydrate deeply.
• 😀 Topical hyaluronic acid draws water from the skin's surface, causing dehydration rather than providing lasting hydration.
• 😀 While high molecular weight hyaluronic acid has anti-inflammatory properties, low molecular weight HA can be pro-inflammatory, potentially irritating the skin.
• 😀 The claim that hyaluronic acid is deeply hydrating is misleading; it requires occlusive ingredients to prevent moisture loss from the skin.
• 😀 Overuse of hyaluronic acid in skincare routines can lead to dryness, redness, inflammation, and irritation, particularly when used without adequate hydration or moisturization.

Q & A

What is the main issue Dr. Shireen Idris addresses in the video?

Dr. Shireen Idris addresses the misleading marketing of hyaluronic acid (HA) in skincare products, aiming to debunk myths around its hydrating and soothing properties.

Why does Dr. Idris believe hyaluronic acid is so widely used in skincare products?

Dr. Idris suggests that hyaluronic acid is heavily marketed due to the large amount of money it generates for the skincare industry, which is often supported by marketing dollars.

What personal experience led Dr. Idris to question the effectiveness of hyaluronic acid?

Dr. Idris recalls using a hyaluronic acid lip serum that made her lips drier and flakier, prompting her to question how an ingredient known for retaining moisture could cause such dryness.

What is the scientific role of hyaluronic acid (HA) in the human body?

In the body, HA plays a role in maintaining structural support and plumpness in the skin by holding up to 1,000 times its weight in water. It also helps in wound healing and tissue repair by promoting blood vessel growth.

How does molecular size affect the performance of hyaluronic acid in skincare?

The size of the hyaluronic acid molecule determines how deeply it can penetrate the skin. Low molecular weight HA is often marketed for deeper penetration, but in reality, it only sits on the surface and may even draw moisture from the skin.

What is the misconception about low molecular weight hyaluronic acid in skincare?

The misconception is that low molecular weight HA can penetrate deeply into the skin and hydrate it, but in reality, it stays in the epidermis and may lead to increased dehydration as it draws moisture from the skin's surface.

What is Dr. Idris' view on the claim that hyaluronic acid is a super hydrating ingredient?

Dr. Idris rejects the claim that hyaluronic acid is super hydrating. She explains that while HA is hydrating in its native state within the body, topical HA draws moisture from the skin, which can lead to dehydration over time, especially in low-humidity conditions.

What is transepidermal water loss, and how does it relate to hyaluronic acid?

Transepidermal water loss refers to the evaporation of water from the skin’s surface. Dr. Idris explains that hyaluronic acid, when used in isolation, can increase transepidermal water loss, making the skin more prone to dehydration.

What does Dr. Idris say about the use of moisturizers with hyaluronic acid?

Dr. Idris questions the effectiveness of using moisturizers with hyaluronic acid, as HA can draw moisture from the skin and may make it harder for the moisturizer to work effectively, leading to potentially counterproductive results.

How does low molecular weight hyaluronic acid affect inflammation?

Dr. Idris explains that low molecular weight HA can be pro-inflammatory, particularly in cases of skin injury. It triggers inflammation by activating certain receptors, which may lead to redness, irritation, and increased dryness over time when used excessively.