What Is Hyaluronic Acid? Hydration Inside and Out
What is hyaluronic acid: hydration from the outside and within
Serums, creams and liquid supplements can all contain hyaluronic acid. However, each is used differently. Start by considering what you expect from the product.
Hyaluronic acid has different uses. First, clarify whether you are looking for topical cosmetic hydration, information about a food supplement, or an explanation of how these differ from an injectable filler. This article deliberately treats them as different things.
In this article
What is hyaluronic acid?
Hyaluronic acid, also called hyaluronan, occurs naturally in the body. It is found in the skin, eyes and joints, among other places. Its ability to bind water explains its use in moisturising products.
In cosmetics, you will find it in serums, gels and creams. Moisturising care aims to improve skin comfort and appearance. However, the presence of one ingredient does not describe the whole formulation.
Source: Cleveland Clinic – Hyaluronic Acid.
Three different methods of use
| Form | Method of use | What to distinguish |
|---|---|---|
| Serum, gel or cream | Applied to the skin. | Part of cosmetic moisturising care. |
| Food supplement | Taken according to the label. | Different use and assessment of effects. |
| Injectable filler | Professional injection into tissue. | A procedure to adjust volume or contours, rather than ordinary home skincare. |
Neither a cream nor a drink is equivalent to an injectable filler. Injectable treatments belong in the hands of a qualified healthcare professional.
Source: Cleveland Clinic – methods of use.
↑ Back to contentsHow do you build a moisturising routine?
- Cleanse gently. For dry skin, limit hot water and scrubbing.
- Add moisturising care. Cream can be applied to skin that is still slightly damp after washing. Follow the instructions for your specific serum.
- Monitor comfort. For very dry skin, a cream or ointment may suit you better than a light body lotion.
- Remember UV protection. A moisturising product does not automatically replace it.
Fragrance-free products may suit sensitive skin. If dryness persists, skin cracks or cosmetics cause burning, consult a dermatologist.
Source: AAD – recommendations for dry skin.
02 · Care tailored to your skin's needs →↑ Back to contentsWhat does hydration from within mean?
Hyaluronic acid food supplements are taken orally. When assessing a specific product, check the amount per daily dose, the other ingredients and the recommended use.
Results obtained with a cream or injectable product cannot automatically be attributed to a supplement. Even with a combination of collagen and hyaluronic acid, the name does not tell you which ingredient is responsible for any change.
A varied diet and adequate fluid intake remain part of everyday habits. A supplement does not replace a varied diet or an individual approach to persistently dry skin.
↑ Back to contentsHow to compare forms of hyaluronic acid
A serum or cream is applied to the skin; a food supplement is taken according to its packaging instructions. These forms are used differently, and one does not replace the other.
See a dermatologist for prolonged irritation or very dry skin. If you take medicines, are pregnant or are breastfeeding, discuss supplement questions with your doctor.
Further context: Cleveland Clinic – Hyaluronic Acid and AAD – dry skin.
↑ Back to contentsWhat should you look for when choosing?
For cosmetics: the intended use, full ingredients list, instructions and your skin's response. For supplements: the daily dose, other products you take and storage conditions.
More milligrams or more named forms in the product name do not, by themselves, compare the effectiveness of finished products. Use cosmetics with a device only when this is consistent with the instructions for both the device and the cosmetic product.
Combining skincare · Read about retinol →↑ Back to contentsFrequently asked questions
Does hyaluronic acid occur naturally in the body?
Yes. It is found in the skin, eyes and joints, for example.
Can a serum replace an injectable filler?
No. Both the application method and the intended purpose differ.
Do I need both cosmetics and a food supplement?
No. Your choice depends on your needs; combining them is optional.
Is a higher amount in a supplement automatically better?
The number of milligrams alone does not prove a better result. Consider the whole product and follow its dosage instructions.
What should I do if my skin stays dry?
Check that your routine is gentle. If problems persist, consult a dermatologist.

