Nutrition Diet: Does Reese's have Red 40 in it? A Detailed Ingredient Guide

October 17, 2025 •

4 min read

According to the Center for Science in the Public Interest, Red 40 is one of the most widely used synthetic food dyes, found in thousands of products. For many health-conscious consumers, the question, "Does Reese's have Red 40 in it?", is a crucial first step toward avoiding artificial colors in their diet.

Quick Summary

This article clarifies the presence of Red 40 in different Reese's products, noting it is typically found in Reese's Pieces but absent from the classic Peanut Butter Cups. It discusses the controversies surrounding artificial food dyes and offers natural, dye-free alternatives.

Key Points

Check the label for specifics: Not all Reese's products are the same; the classic Peanut Butter Cups and Reese's Pieces have different ingredient lists.
Reese's Pieces contain Red 40: The crunchy, candy-coated Reese's Pieces and some special editions explicitly list Red 40 Lake as an ingredient.
Original cups are generally dye-free: The traditional Reese's Milk Chocolate Peanut Butter Cups typically do not contain artificial colorings.
Red 40 is controversial: The synthetic dye has been linked to hyperactivity in sensitive children and other health concerns, prompting stricter regulations in some regions.
Consider dye-free alternatives: Many brands like Unreal and Justin's offer peanut butter cups made with natural ingredients and no artificial colors.
Read the full ingredient list: The word 'color' or 'coloring' on a label can be misleading; always look for the specific names of dyes like 'Red 40'.

The world of packaged snacks, especially candy, can be a labyrinth of complex ingredient lists. For those seeking to avoid specific additives, such as artificial food dyes, knowing which products contain them is essential. One common question is whether the beloved chocolate and peanut butter treat, Reese's, includes Red 40. The answer is not a simple yes or no, as it depends on which specific Reese's product you are consuming. The difference lies between the classic peanut butter cup and other varieties, like the candy-coated Reese's Pieces.

The Verdict: Differentiating Reese's Products

To determine if Red 40 is present, you must look at the specific product's ingredient list. The Hershey Company, which manufactures Reese's, uses different formulations for its various products. This is where the confusion often arises, as many people assume all items under the Reese's brand share the same ingredients.

Reese's Peanut Butter Cups: The Classic

For the original Reese's Milk Chocolate Peanut Butter Cups, the good news for those avoiding Red 40 is that it is not a listed ingredient. The standard ingredient list for the iconic two-cup package typically includes milk chocolate, peanuts, sugar, dextrose, salt, and a preservative (TBHQ). The coloring is derived from the natural ingredients and the chocolate, and no artificial colorings are added. This makes the classic cup a viable option for those concerned about this particular synthetic dye.

Reese's Pieces and Other Varieties

On the other hand, a completely different story unfolds with Reese's Pieces. These brightly colored, candy-coated peanut butter morsels explicitly list Red 40 Lake in their ingredients, along with other artificial colors like Yellow 5 Lake and Blue 1 Lake. The 'Lake' designation indicates that the dye is an insoluble form, often used in fatty foods or those with low moisture. Other seasonal or special edition products, such as the 'Spring Sprinkles Miniatures,' may also include artificial colors. The crucial takeaway is that the presence of artificial dyes is directly tied to the specific product's formulation, not the entire brand.

Understanding Red 40 and Its Controversies

Red 40, also known as Allura Red AC, is a synthetic food dye derived from petroleum. It is one of the most widely used color additives in the U.S. and Europe, though its use is subject to different regulations. While regulatory bodies like the U.S. Food and Drug Administration (FDA) deem it safe for consumption at approved levels, controversy persists due to health concerns raised by some studies and consumer advocacy groups.

Potential Health Concerns Linked to Red 40:

Hyperactivity in Children: Several studies have suggested a link between artificial food dyes, including Red 40, and increased hyperactivity in sensitive children. The European Union addresses this by requiring a warning label on products containing Red 40, a practice not mandated in the U.S..
Allergic Reactions: Some individuals may experience allergic-like hypersensitivity reactions to Red 40, which can manifest as hives, skin rashes, or other symptoms.
Contaminants: Some sources indicate that Red 40, along with other dyes, may contain trace amounts of known carcinogens, though regulatory bodies claim these levels are safe.
Other Conditions: Some anecdotal reports and limited studies have explored potential links to migraines, though more research is needed.

How to Avoid Artificial Dyes in Candy

For those who want to be certain their candy is free of artificial colors, relying solely on brand names is not enough. The key is to become a vigilant label reader. In addition to carefully checking the ingredient list, here are some actionable steps:

Seek Natural Alternatives: Look for brands that explicitly state they use natural colorings or are free from artificial dyes. Many companies offer products specifically catering to this market.
Choose Organic: Processed foods with the USDA-certified organic label are prohibited from containing artificial food dyes. This certification can be a reliable shortcut for avoiding synthetic additives.
Prioritize Whole Foods: The most straightforward approach is to focus on a diet rich in whole, unprocessed foods like fruits and vegetables, which are naturally dye-free.


Feature	Reese's Peanut Butter Cups	Reese's Pieces
Contains Red 40?	No	Yes (as Red 40 Lake)
Appearance	Chocolate exterior, peanut butter filling	Small, round candy-coated morsels
Texture	Smooth, creamy chocolate and peanut butter	Hard, crunchy candy shell with a peanut butter center
Primary Function	Classic chocolate/peanut butter snack	Crunchy peanut butter candy
Other Dyes	Generally none	Yellow 5 Lake, Blue 1 Lake

Making Informed Dietary Choices

Ultimately, deciding whether to consume products containing artificial dyes is a personal choice. For individuals with known sensitivities or parents concerned about potential behavioral effects in their children, avoiding these ingredients is a reasonable and practical approach. For those simply looking to make healthier, cleaner eating choices, minimizing processed foods containing such additives is a logical step.

There are numerous companies that offer high-quality, dye-free alternatives that satisfy a sweet tooth without the synthetic ingredients. Brands like Unreal and Justin's, for example, sell peanut butter cups that use natural ingredients and are certified organic. Making a simple switch can be a straightforward way to align your snack choices with your nutritional goals.

Conclusion In conclusion, the presence of Red 40 in a Reese's product depends on the specific item. While the classic peanut butter cup is free of this artificial dye, popular variations like Reese's Pieces and some seasonal products do contain it. Staying informed and taking a moment to check the ingredient list on any packaged food is the most reliable way to ensure you're making choices that fit your dietary preferences and health goals. Given the growing availability of delicious, naturally-colored alternatives, enjoying a treat while avoiding artificial dyes is more achievable than ever.

Center for Science in the Public Interest: Synthetic food dyes: A rainbow of risks

Frequently Asked Questions

No, the standard Reese's Milk Chocolate Peanut Butter Cups generally do not contain any artificial colorings like Red 40. The ingredient lists for these products confirm that only natural colorants from the chocolate and other ingredients are present.

Reese's Pieces, the small, candy-coated peanut butter morsels, explicitly contain Red 40 Lake. Other variations, like certain seasonal or novelty items, may also list artificial colors, so checking the label is essential.

While regulatory bodies like the FDA consider Red 40 safe at approved levels, some evidence suggests a potential link to hyperactivity in sensitive children and allergic reactions in certain individuals. Not everyone will experience adverse effects.

Food manufacturers use synthetic dyes like Red 40 because they provide vibrant, consistent colors that are cost-effective and stable over time, enhancing the visual appeal of products.

Yes, many brands use natural alternatives for coloring, such as extracts from vegetables and fruits like beets or turmeric. The use of these is becoming more common, especially in health-conscious and organic product lines.

Yes. In the European Union, products containing Red 40 and other specific artificial dyes must carry a warning label stating, 'May have an adverse effect on activity and attention in children'.

The most effective way is to always read the ingredient list on the product packaging. You can also opt for certified organic products, which are prohibited from containing artificial food dyes.