Anirva sells Hair Radiance with Probiotics, a dietary supplement. This article shares research for general education and is not medical advice. These statements have not been evaluated by the Food and Drug Administration.
When you are standing in front of a shelf of hair supplements, or scrolling through dozens online, it is natural to wonder how to tell them apart. Most bottles promise stronger, fuller hair, so the front of the package does not help much. The back of the bottle is where the useful facts are. Once you know how to read a Supplement Facts label, you can compare products in a few minutes and choose with more confidence.
In this article
Key Takeaways
- The label shows amounts per serving. Check how many capsules or gummies make one serving before you compare products.
- A higher % Daily Value is not always better. Some nutrients, like selenium and vitamin A, have upper limits, and too much can work against hair.
- A "proprietary blend" hides the amount of each ingredient. US rules require only the total weight of the blend.
- For probiotics, look for strain names and a CFU count. Experts suggest the count should hold through the end of the shelf life.
- The FDA does not approve supplements before they are sold. Quality seals from outside testers can add some assurance.
Start with the Serving Size
Every amount on a Supplement Facts label is for one serving, and a serving can be one capsule or several. The NIH Office of Dietary Supplements explains that the label lists the active ingredients, the amount per serving, and other ingredients such as fillers and binders.
This matters when you compare products. One brand may list 5,000 mcg of biotin in one capsule, while another lists 3,000 mcg across three capsules. The count on the bottle tells you how long it will last. For example, Hair Radiance has 90 capsules and a serving of three, so one bottle is 30 servings.
Read the % Daily Value Column
The % Daily Value (%DV) shows how much of a day's reference amount one serving gives you. Vitamins and minerals have Daily Values, while most herbs do not, so herbs show two asterisks instead of a number.
It is easy to assume that a bigger percentage means a better product. For hair, that is not always true. The NIH notes that taking more than you need costs more and may raise the risk of side effects. It also lists hair loss as the most common sign of too much selenium, and a 2019 review found the same for too much vitamin A. So it helps to check a few nutrients against their adult upper limits, which are set by the National Academies:
| Nutrient | Daily Value | Adult Upper Limit | Why It Matters for Hair |
|---|---|---|---|
| Selenium | 55 mcg | 400 mcg | Hair loss is the most common sign of too much |
| Vitamin A | 900 mcg | 3,000 mcg (preformed) | Too much has been linked to hair loss |
| Zinc | 11 mg | 40 mg | 50 mg or more a day can lower copper |
| Vitamin D | 20 mcg (800 IU) | 100 mcg (4,000 IU) | Easy to double up if you take a separate vitamin D |
| Biotin | 30 mcg | None set | High doses can affect some lab tests |
Sources: NIH Office of Dietary Supplements fact sheets; Almohanna and colleagues, 2019.
Watch the units too. Vitamin D may be listed in micrograms (mcg), international units (IU), or both. The NIH lists the adult amount as 15 mcg, or 600 IU, so 1 mcg equals 40 IU.
Look for the Amount of Each Ingredient
Some labels group several ingredients under a name like "Hair Growth Complex" or "Proprietary Blend." Under the FDA's labeling rule, a blend must list its ingredients in order of weight and show the total weight of the blend. It does not have to show how much of each ingredient is inside.
That makes it hard to know whether you are getting a meaningful amount of any one herb. When each ingredient has its own amount, you can compare it with the amounts used in research. Studies often used different amounts than a supplement contains, and a clear label lets you see that for yourself.
Check How Herbs Are Described
A clear herb listing tells you three things: the plant's name, the part used, and how the extract was made. You may see a standardized percentage, such as "green tea leaf extract (45% EGCG)." This tells you how much of a key compound the extract contains, so 80 mg of that extract has about 36 mg of EGCG.
You may also see a ratio, such as "saw palmetto 4:1 extract." A ratio like this usually describes how much plant went into making the extract. It is useful to know, though it does not tell you the amount of any one compound.
For Probiotics, Look for Strain Names and a CFU Count
Probiotics are described by genus, species and strain. For example, in "Lactobacillus rhamnosus UALr-06," the letters and numbers at the end name the strain. The International Scientific Association for Probiotics and Prebiotics (ISAPP) recommends that labels list the strain for each probiotic, so you can look up what has been studied.
The amount is shown in colony forming units, or CFU. In 2018, the FDA said it would allow companies to list CFU on the label, in addition to weight, so shoppers can compare products more easily. ISAPP suggests the CFU count should hold through the end of the shelf life, not only at the time of manufacture, because live bacteria decline over time. A small note under the label usually tells you which one the company used.
Read the Claims with Care
The FDA explains that it does not have the authority to approve supplements, or their labels, before they are sold. The company is responsible for making sure its product is safe and its label is accurate. This is why supplement claims come with an asterisk, and a line that says the FDA has not evaluated the statement.
The FDA also suggests being wary of hype, and it notes that good health advice is usually based on research over time, not a single study. The word "natural" does not always mean safe, the NIH adds. A calm, specific label is often a better sign than a bold promise.
Look for Quality Testing
Some supplements carry a seal from an outside tester, such as U.S. Pharmacopeia (USP), NSF International or ConsumerLab. The NIH explains that these groups test products, though a seal does not guarantee that a product is safe or that it works. If a label says "third-party tested" without naming the tester, it is fair to ask the company for details.
Compare the Cost per Serving
Bottle prices can be misleading, because the number of servings differs. Dividing the price by the number of servings gives a fairer comparison. For example, a 30-serving bottle of Hair Radiance is $34.36, or about $1.15 a serving. On a monthly subscription, it is $30.92, or about $1.03 a serving. Prices are from anirva.com in September 2026 and may change.
A Quick Label Checklist
| On the Label | What to Look For | Why It Helps |
|---|---|---|
| Serving size | How many capsules or gummies make one serving | All amounts are per serving |
| % Daily Value | Nutrients near or above 100%, and under the upper limit | More is not always better for hair |
| Each ingredient | An amount listed for every ingredient | Lets you compare with research amounts |
| Herbs | Plant part, and a percentage or ratio | Tells you how the extract was made |
| Probiotics | Genus, species, strain, and CFU through shelf life | Lets you look up what was studied |
| Claims | An asterisk and the FDA statement | Claims are the company's, not the FDA's |
| Quality seal | A named outside tester | Shows the product was checked |
| Price | Cost per serving | Makes bottles of different sizes comparable |
How the Hair Radiance Label Reads
Each vitamin, mineral and herb has its own amount per serving. The herb extracts show their plant part and a percentage or ratio, and the three probiotics are listed by strain.
Good to Know
If You Are Deciding
It can help to start with why your hair is changing. A doctor can look at your diet and may check iron, vitamin D and thyroid levels, since supplements help most when something is low. After that, a few minutes with the label goes a long way. Look for an amount for every ingredient, nutrients within their upper limits, and a price that makes sense per serving.
Hair also grows slowly, at about half an inch a month, according to MedlinePlus. So whichever supplement you choose, a few months of steady use gives you a fair picture.
The Short Version
The front of a hair supplement bottle tells you what the company hopes for, while the back tells you what is inside. Check the serving size, compare nutrients with their upper limits, and look for an amount for every ingredient. For probiotics, look for strain names and a CFU count through the shelf life. Because the FDA does not approve supplements before sale, a clear label and a named quality tester are helpful signs.
Frequently Asked Questions
Which hair growth vitamin should I choose?
What should I look for in a hair growth supplement?
Are hair supplements approved by the FDA?
What does "proprietary blend" mean on a label?
Is a higher % Daily Value better for hair?
What vitamins help strengthen hair?
References
- NIH Office of Dietary Supplements. Dietary supplements: what you need to know. ods.od.nih.gov
- US Food and Drug Administration. FDA 101: dietary supplements. fda.gov
- Code of Federal Regulations. 21 CFR 101.36, Nutrition labeling of dietary supplements (proprietary blends, paragraph c). ecfr.gov
- US Food and Drug Administration. FDA issues draft guidance on the labeling of dietary supplements containing live microbials. September 6, 2018. fda.gov
- Sanders ME. Decoding a probiotic product label. International Scientific Association for Probiotics and Prebiotics. Updated June 21, 2025. isappscience.org
- Almohanna HM, Ahmed AA, Tsatalis JP, Tosti A. The role of vitamins and minerals in hair loss: a review. Dermatol Ther (Heidelb). 2019;9(1):51-70. pubmed.ncbi.nlm.nih.gov DOI 10.1007/s13555-018-0278-6; PMID 30547302.
- NIH Office of Dietary Supplements. Fact sheets for health professionals: selenium, vitamin A, zinc, vitamin D, biotin. ods.od.nih.gov
- US Food and Drug Administration. Biotin interference with troponin lab tests (safety communication, updated 2019). fda.gov
- MedlinePlus, US National Library of Medicine. Hair problems. medlineplus.gov
Hair Radiance with Probiotics
See what's actually on the label
Every ingredient in Hair Radiance is listed with its own amount, extract type and strain — nothing hidden in a blend.
See Hair Radiance →Written by the Anirva Editorial Team | Reviewed by [REVIEWER NAME AND CREDENTIAL REQUIRED] | Last reviewed: September 26, 2026
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
