Ingredient review

Solvent Red 48

INCI: SOLVENT RED 48

A common synthetic red dye approved for use in cosmetics, but best limited to rinse-off products to avoid potential staining or sensitivity.

beautyskincarecolorant

In plain English

Solvent Red 48 is a man-made red pigment used to give color to makeup and some skincare products. It is part of the same family as D&C Red No. 7 and is approved by regulators for use in cosmetics, but it is generally recommended for rinse-off products (like soaps or shampoos) rather than leave-on formulas because it can sometimes cause staining or mild irritation on sensitive skin.

Review score

Safety, usefulness, and evidence

3.0Fair
3.0/ 5

Useful in the right context, but not low-maintenance

The evidence base is useful, but some claims depend heavily on the formula.

Risk flags are low for most users, though the finished product can still irritate.

Source
synthetic
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Read the cautions before using

Solvent Red 48 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 Solvent Red 48.
  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

A synthetic organic pigment from the xanthene dye family, often listed as D&C Red No. 7 or CI 15850:1. It is produced through chemical synthesis and is not found in nature.

How it works

It works by absorbing and reflecting specific wavelengths of light, giving the product a red or pink hue. In cosmetics, it is dispersed in the formula to provide uniform color without affecting the product's texture or performance.

Pros

Vibrant color payoff

Delivers a strong, consistent red shade that is stable in many formulations.

Regulatory approval

Approved by the FDA and EU for use in cosmetics, with a long history of safe use at low concentrations.

Cons and cautions

Staining risk

Can leave temporary red stains on skin, clothing, or towels, especially in leave-on products.

Potential irritation

While generally safe, some people with sensitive skin may experience mild redness or irritation, particularly with prolonged contact.

Best for

  • People who use rinse-off products like colored soaps or shampoos
  • Those looking for a cost-effective red pigment in makeup

Use caution if

  • Individuals with very sensitive or reactive skin
  • Those who prefer only natural or mineral-based colorants

Usage tips

Use in rinse-off products like body washes or shampoos to minimize staining.
Patch test on a small area of skin before using a new product containing this dye.
Avoid applying to broken or irritated skin.

Safety summary

Generally considered safe for use in cosmetics at low concentrations, but best suited for rinse-off products to minimize skin contact and staining risk.

Research notes

Studies indicate low acute toxicity and low skin sensitization potential, but some individuals may experience mild irritation. Long-term safety data is well-established through regulatory review.

Common label clues

Typical concentration
Very low (typically under 1%)
Regulatory status
Approved for use in cosmetics in the US (as D&C Red No. 7) and EU (as CI 15850:1) with concentration limits for leave-on products.
Common uses
Lipsticks, Blushes, Rinse-off products
Environmental note
As a synthetic dye, it is not biodegradable and may accumulate in water systems; however, it is used in very small amounts in cosmetics.

Good to know

  • Solvent Red 48 is also known as D&C Red No. 7 in the US and is listed as CI 15850:1 internationally.
  • It is not recommended for use in products intended for the eye area due to potential irritation.

Common questions

What is Solvent Red 48 in beauty products?

Solvent Red 48 is a man-made red pigment used to give color to makeup and some skincare products. It is part of the same family as D&C Red No. 7 and is approved by regulators for use in cosmetics, but it is generally recommended for rinse-off products (like soaps or shampoos) rather than leave-on formulas because it can sometimes cause staining or mild irritation on sensitive skin.

What does Solvent Red 48 do in a beauty product?

It works by absorbing and reflecting specific wavelengths of light, giving the product a red or pink hue. In cosmetics, it is dispersed in the formula to provide uniform color without affecting the product's texture or performance.

Is Solvent Red 48 safe for most people?

Generally considered safe for use in cosmetics at low concentrations, but best suited for rinse-off products to minimize skin contact and staining risk.

Who should be careful with Solvent Red 48?

Individuals with very sensitive or reactive skin Those who prefer only natural or mineral-based colorants

Research sources

FDA Color Additive Status ListOpenCosIng Database - CI 15850:1OpenPubMed - Safety of D&C Red No. 7Open

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.