How Do Beauty Gummies Work? What We Know

Beauty gummies work systemically: the active ingredients are released in the digestive tract, absorbed in the intestine and carried by the blood to the cells that use them. There is no direct contact with the skin, hair or nails, and there is no mechanism that makes a nutrient "travel" to your face just because you ate a gummy. What can happen is that the body uses those nutrients in the processes they take part in — for example, in collagen synthesis or keratin formation — provided there is a sufficient dose and, above all, a need.

That is why the question "do they work?" has a conditional answer: it depends on the ingredient, the dose per serving, your nutritional status and how regularly you take it. This article explains the journey of nutrients in the body, what clinical trials show for collagen and biotin, what the authorised claims in the European Union say, how to read a label and when it makes sense to talk to a healthcare professional.

What happens in the body when you take a beauty gummy?

The gummy form is only the vehicle. After chewing and swallowing, the gummy breaks down in the stomach and the nutrients are released in the small intestine, where they are absorbed into the bloodstream. From there, they are distributed throughout the body — not only to the skin, hair or nails. It is a systemic action, and the tissues that most depend on those nutrients are the ones that benefit.

The case of collagen illustrates this journey well. When you take hydrolysed collagen, it is made up of peptides and low molecular weight amino acids. In a randomised crossover trial in 15 healthy men, a single dose of 10 g of hydrolysed collagen in a fermented drink was compared with the same dose in water, assessing the plasma concentrations of the amino acids characteristic of collagen — glycine, proline and hydroxyproline — used as absorption markers ¹. Another randomised, blinded, crossover trial in 10 healthy men showed that ingestion of hydrolysed collagen increased plasma concentrations of almost all amino acids over 240 minutes, and that prior enzymatic hydrolysis increased the absorption rate of glycine, proline and hydroxyproline ². In other words: the peptides enter the bloodstream, but the body breaks them down and reuses the amino acids — it does not place them intact in the skin.

The same principle applies to biotin. In a crossover study in 6 healthy adults, pharmacological doses of biotin given orally were absorbed almost completely ³. This helps explain why, in people without a deficiency, doses far above requirements rarely add anything: what is not used is eliminated.

What does the evidence say about collagen and skin?

Collagen is the beauty gummy ingredient with the most clinical research. A systematic review with meta-analysis of 19 randomised, double-blind, controlled trials, with 1,125 participants (95% women, aged between 20 and 70), found favourable results of hydrolysed collagen supplementation on indicators of skin ageing, such as hydration, elasticity and wrinkles ⁴.

A randomised, double-blind, placebo-controlled trial published in 2025 followed 77 healthy women for 12 weeks with 5,000 mg per day of bioactive collagen peptides, followed by 4 weeks without supplementation. After 12 weeks, the collagen group showed significant improvements in dermal density, hydration and transepidermal water loss compared with placebo, and these improvements were maintained during the washout period ⁵.

A systematic review of dermatological applications analysed 11 randomised, placebo-controlled trials, with 805 participants, who used hydrolysed collagen between 2.5 g and 10 g per day, for 8 to 24 weeks, in contexts such as skin ageing and xerosis ⁶. This is the order of magnitude of the doses studied — and this is where the comparison with the label matters.

TuttiBear Collagen Gummies provide 1,000 mg of hydrolysed collagen per serving of 2 gummies, plus 24 mg of vitamin C, 15 µg of biotin and 18 µg of selenium. The dose per serving is lower than that used in most of the trials cited (2.5 g to 10 g per day); study doses are not dosing instructions, and the directions on the label are 2 gummies per day.

Biotin, vitamin C and minerals: what they do and when they make a difference

Biotin takes part in enzymatic reactions of metabolism, and its deficiency is associated with changes in hair and nails. A systematic review on micronutrients and androgenetic alopecia concluded that deficiencies or imbalances in B-complex vitamins, vitamin D, iron, selenium and zinc may contribute to the pathogenesis of alopecia and represent modifiable risk factors, although the evidence is not fully consistent and some studies find no significant associations ⁷. This means that, in people with adequate levels, biotin supplementation has no demonstrated effect on hair growth.

For vitamin C, zinc and selenium, the framework is different: they are essential nutrients with established functions, and supplementation makes sense above all when the diet does not cover requirements. The European Food Safety Authority has authorised specific claims for these nutrients, including "Vitamin C contributes to normal collagen formation for the normal function of skin" and "Zinc contributes to the maintenance of normal hair" ⁸. These are claims about the physiological role of the nutrient, not promises of an aesthetic result.

A systematic review of 141 studies compared the intake and nutritional status of adults on plant-based diets with that of meat eaters and found that intake and markers of vitamin B12, vitamin D, iron, zinc, iodine and calcium were generally lower in vegetarian and vegan groups ⁹. For those who follow this type of diet, a supplement can be a practical way to cover gaps — but the choice should be based on real needs, not on the promise of beauty.

Do gummies have the same dose as tablets?

There are no trials that directly compare gummies with tablets or capsules for these ingredients, so it is not possible to claim equivalence or superiority. What is known is that the pharmaceutical form imposes physical limits: a gummy is small and has less capacity to carry collagen powder than a tablet or a sachet. That is why many beauty gummies provide collagen doses lower than those studied, and it is essential to read the label.

Ingredient	Doses used in studies	Example of a TuttiBear label (per serving of 2 gummies)
Hydrolysed collagen	2.5 g to 10 g per day, for 8 to 24 weeks 6; 5,000 mg per day for 12 weeks 5	1,000 mg (Collagen Gummies)
Biotin	Pharmacological doses (2.1 to 81.9 µmol) absorbed almost completely in healthy adults 3	5,000 µg (Hair & Nails Gummies); 180 µg (Multivitamin Gummies); 15 µg (Collagen Gummies)
Vitamin C	Essential nutrient for normal collagen formation 8	50 mg (Gummies for Skin Hydration and Firmness); 24 mg (Collagen Gummies); 20 mg (Hair & Nails Gummies)

The doses shown in the studies column are there to put the research in context and are not dosing recommendations. Always follow the directions on the label of the product you choose.

How long does it take to notice anything?

The target tissues grow slowly. Nails grow about 3 mm per month and hair about 1 cm per month, so any change in hair or nails only becomes visible after several growth cycles. In skin trials, results were measured at 8 and 12 weeks ⁵, and the reviews include protocols of 8 to 24 weeks ⁶. There is no universal timeframe: it depends on the ingredient, the dose, your starting point and how regularly you take it.

As for when to take it, most labels recommend taking it with a meal, which helps with the absorption of fat-soluble nutrients such as vitamins A, D and E. There is no magic hour — consistency over the weeks matters more than the exact time. If you forget one day, resume your routine the next day without doubling the dose.

How to read the label of a beauty gummy

Before comparing products, check these points:

• Amount per serving, not per gummy. Confirm how many gummies make up the stated daily dose and add up the values accordingly.
• Form of the ingredient. For collagen, look for "hydrolysed collagen" or "collagen peptides", which are the forms studied ².
• Useful dose versus long list. A list with dozens of extracts in minimal amounts rarely matches doses with evidence.
• Sugars and polyols. Many gummies use maltitol or other polyols; excessive consumption may have a laxative effect, as stated in the product warnings.
• Suitability. Check whether the product is intended for adults or children and whether there are specific warnings.

If you are looking for collagen, you can read the guide on the recommended daily dose and how to get it right and the comparison between collagen gummies or tablets. For biotin, see how much to take per day.

Who it makes sense for — and who it does not

Beauty gummies can be useful in specific situations:

• People with a diagnosed deficiency of a specific nutrient, on the advice of a healthcare professional.
• People on restrictive diets, such as vegetarian or vegan, who may have lower intakes of vitamin B12, vitamin D, iron, zinc, iodine and calcium ⁹.
• Those who find it difficult to maintain a varied diet and are looking for a practical way to complement their intake.

For those who already have a balanced diet and no specific complaints, the expected benefit is small. Food supplements are not a substitute for a varied and balanced diet or a healthy lifestyle, and should not be used as replacements for these.

Safety, interactions and when to talk to a professional

At the doses stated on the label, beauty gummies are generally well tolerated. Even so, there are points to consider. High-dose biotin can interfere with the results of some laboratory tests, including thyroid function tests — the warnings on TuttiBear products recommend telling your doctor and the laboratory before having tests. Collagen may cause gastrointestinal discomfort in some people, and gummies with polyols may have a laxative effect if consumed in excess.

If you are pregnant, breastfeeding, ill or taking medication, you should consult a healthcare professional before using any supplement. The same applies to children: beauty gummies are intended for adults, and supplementation in children should be guided by a professional. Keep the bottles out of the reach of children — the gummies look like sweets, but they are not.

In case of accidental overdose, symptoms may include nausea, vomiting or diarrhoea. Keep the gummies out of the reach of children — they look like sweets, but they are not.

A realistic plan to try them

If you decide to try them, first define your goal (skin, hair or nails) and choose the ingredient based on that. Compare the dose per serving declared on the label with the doses used in studies, knowing that these are not dosing instructions. Commit to a minimum period of two to three months of regular intake, because that is the timeframe in which trials measure results ⁵. Take photos at the start and at the end of that period, to have an objective reference. And keep up the basics: sun protection, moisturising, a varied diet and adequate sleep.

If after three months you notice no differences, that does not necessarily mean you did something wrong — it may simply mean there was no deficiency to correct. Beauty gummies are a complement with modest and variable evidence, not a quick fix. Deciding based on the label and the evidence, rather than advertising, is the best starting point.

Frequently asked questions

Are beauty gummies absorbed directly through the skin?

No. The nutrients are released in the digestive tract, absorbed in the intestine and distributed by the blood throughout the body. There is no mechanism that directs them specifically to the skin, hair or nails — the effect is systemic and depends on the needs of each tissue.

How long does it take to notice results with collagen gummies?

In clinical trials, effects on the skin are measured at 8 and 12 weeks, and the reviews include protocols of 8 to 24 weeks. For hair and nails, because growth is slow, it may take longer. Taking them regularly matters more than the exact time.

Does the biotin in gummies make hair grow faster?

Biotin is essential to metabolism, and its deficiency is associated with changes in hair and nails. However, in people without a deficiency, the evidence does not show that supplementation speeds up hair growth. Research on micronutrients and alopecia is promising but not fully consistent.

Can I take beauty gummies if I am pregnant or breastfeeding?

You should consult a healthcare professional before starting any supplement during pregnancy or breastfeeding. Some nutrients have specific safety limits at these stages, and the assessment should be individualised.

Can biotin interfere with blood tests?

Yes. High-dose biotin can alter the results of some laboratory tests, including thyroid function tests. If you take supplements with biotin, tell your doctor and the laboratory before having tests.