Ingredient review

Sodium Picramate

INCI: SODIUM PICRAMATE

Sodium Picramate is a synthetic dye used in hair color, but it can be a skin sensitizer and is best avoided by those with sensitive scalps.

beautyhair colordye

In plain English

Sodium Picramate is a man-made dye that gives hair yellow or orange tones. It's mainly found in permanent and semi-permanent hair dyes. Because it can irritate the skin or cause allergic reactions in some people, it's used in very small amounts and is not recommended for everyday use on sensitive skin.

Review score

Safety, usefulness, and evidence

2.5Fair
2.5/ 5

Higher-caution ingredient

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

Main practical flags: irritation is moderate; clogging risk is low.

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

Quick decision guide

Read the cautions before using

Sodium Picramate can be useful, but watch for some irritation potential.

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 Sodium Picramate.
  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

moderate

Can bother some users, especially with frequent use, damaged skin, or strong companion ingredients.

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

Sodium Picramate is a synthetic organic compound belonging to the nitrophenol family. It is used as a colorant in cosmetic products, especially hair dyes, to produce yellow to orange shades.

How it works

In hair dye formulations, Sodium Picramate works by depositing color onto the hair shaft. It binds to the hair's protein structure, providing temporary or semi-permanent color that fades with washing.

Pros

Effective colorant

Provides consistent yellow-orange shades that are difficult to achieve with natural dyes alone.

Low comedogenic risk

Unlikely to clog pores, making it suitable for use on the scalp without causing acne.

Cons and cautions

Skin sensitization potential

Can cause allergic reactions or irritation, especially with repeated use on sensitive skin.

Staining issues

May stain skin, towels, and clothing during application, requiring careful handling.

Best for

  • Those looking for temporary or semi-permanent warm hair tones
  • Individuals who have used similar dyes without irritation

Use caution if

  • People with sensitive scalp or known allergies to hair dyes
  • Those with eczema or psoriasis on the scalp

Usage tips

Always perform a patch test 48 hours before using any hair dye containing Sodium Picramate.
Wear gloves during application to avoid staining hands and reduce skin contact.

Safety summary

Sodium Picramate is generally safe for most people when used in low concentrations in rinse-off hair dyes. However, it poses a moderate risk of skin irritation and allergic reactions, particularly for those with sensitive skin or a history of dye allergies.

Research notes

Studies indicate that Sodium Picramate can cause contact dermatitis in susceptible individuals. Its use is regulated to minimize exposure, but there is limited long-term safety data.

Common label clues

Typical concentration
Very low, typically under 1%
Regulatory status
Approved for use in cosmetics in the EU and US at low concentrations, but subject to labeling requirements for hair dyes.
Common uses
Hair dyes, Temporary hair colors
Environmental note
As a synthetic dye, it may persist in wastewater and is not biodegradable; proper disposal is recommended.

Good to know

  • Sodium Picramate is often listed under its INCI name on hair dye ingredient labels.
  • It is not commonly found in leave-on products like shampoos or conditioners.

Common questions

What is Sodium Picramate in beauty products?

Sodium Picramate is a man-made dye that gives hair yellow or orange tones. It's mainly found in permanent and semi-permanent hair dyes. Because it can irritate the skin or cause allergic reactions in some people, it's used in very small amounts and is not recommended for everyday use on sensitive skin.

What does Sodium Picramate do in a beauty product?

In hair dye formulations, Sodium Picramate works by depositing color onto the hair shaft. It binds to the hair's protein structure, providing temporary or semi-permanent color that fades with washing.

Is Sodium Picramate safe for most people?

Sodium Picramate is generally safe for most people when used in low concentrations in rinse-off hair dyes. However, it poses a moderate risk of skin irritation and allergic reactions, particularly for those with sensitive skin or a history of dye allergies.

Who should be careful with Sodium Picramate?

People with sensitive scalp or known allergies to hair dyes Those with eczema or psoriasis on the scalp

Research sources

Cosmetic Ingredient Review (CIR) - Safety Assessment of Nitrophenol DyesOpenEuropean Chemicals Agency (ECHA) - Sodium PicramateOpenPubMed - Contact dermatitis from hair dyesOpen

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.