Ingredient review

Acid Blue 62

INCI: CI 62045

CI 62045 is a safe, widely used blue dye in cosmetics, but offers no skincare benefits.

beautyskincarecolorant

In plain English

CI 62045 is a man-made blue colorant added to cosmetics to give them a blue hue. It doesn't treat or improve your skin—it's purely for appearance. In the amounts used in makeup and personal care products, it's considered safe and unlikely to cause irritation or clog pores.

Quick decision guide

Read the cautions before using

Acid Blue 62 is generally a lower-concern ingredient when the full formula suits your skin.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Acid Blue 62.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.

Score terms in plain English

Irritation risk

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

CI 62045 is a synthetic anthraquinone dye that produces a bright blue color. It is listed by its Color Index (CI) number, a standard system for identifying pigments and dyes used in cosmetics and other industries.

How it works

It works by absorbing and reflecting specific wavelengths of light, making the product appear blue. It is mixed into the product base during manufacturing and stays suspended or dissolved, coloring the entire formula evenly.

Pros

Vibrant color

Delivers a bright, consistent blue shade that stays true in the product over time.

Low irritation risk

At typical use levels, it rarely causes skin irritation or breakouts, making it suitable for most skin types.

Cons and cautions

No skincare benefit

This ingredient is purely cosmetic—it adds color but does not hydrate, protect, or improve skin health.

Potential allergen

A small number of people may experience allergic contact dermatitis, especially in leave-on products near the eyes.

Best for

  • Anyone who wants blue-tinted cosmetics
  • People without known dye allergies

Use caution if

  • Individuals with known sensitivity to synthetic dyes

Usage tips

Check the full ingredient list if you have known sensitivities to synthetic dyes.
Patch test a new product containing this dye on a small area of skin before full use.

Safety summary

CI 62045 is considered safe for use in cosmetics at typical concentrations. It has a low potential for irritation and is not known to be comedogenic. However, as with any colorant, rare allergic reactions can occur.

Research notes

Safety assessments by cosmetic ingredient review panels and regulatory bodies have concluded that CI 62045 is safe for use in cosmetics when used as intended. No significant health risks have been identified at current exposure levels.

Common label clues

Typical concentration
Very low, typically less than 1%
Regulatory status
Approved for use in cosmetics in the EU, US (as a color additive subject to certification), and many other countries. Always check local regulations as restrictions may vary.
Common uses
Hair dyes, Eyeliners, Mascaras, Nail polishes, Soaps
Environmental note
As a synthetic dye, it may not be biodegradable. Disposal of large amounts should follow local environmental guidelines.

Good to know

  • CI 62045 is also known as Acid Blue 62 and is approved for use in cosmetics in many regions including the EU and US.
  • It is not the same as FD&C Blue No. 1 (which is a different dye) and is more commonly found in rinse-off products.

Common questions

What is Acid Blue 62 in beauty products?

CI 62045 is a man-made blue colorant added to cosmetics to give them a blue hue. It doesn't treat or improve your skin—it's purely for appearance. In the amounts used in makeup and personal care products, it's considered safe and unlikely to cause irritation or clog pores.

What does Acid Blue 62 do in a beauty product?

It works by absorbing and reflecting specific wavelengths of light, making the product appear blue. It is mixed into the product base during manufacturing and stays suspended or dissolved, coloring the entire formula evenly.

Is Acid Blue 62 safe for most people?

CI 62045 is considered safe for use in cosmetics at typical concentrations. It has a low potential for irritation and is not known to be comedogenic. However, as with any colorant, rare allergic reactions can occur.

Who should be careful with Acid Blue 62?

Individuals with known sensitivity to synthetic dyes

Research sources

Cosmetic Ingredient Review (CIR) - Safety Assessment of Color AdditivesOpenEuropean Commission - CosIng DatabaseOpenFDA - Color Additives Permitted for Use in CosmeticsOpen

Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.