There are several ingredients that can be found in shaving products, some of which may have negative effects on the skin. Here is a list of some of the ingredients that have been mentioned in the search results:

Positive:

• Potassium myristate: This ingredient is considered pretty safe.

Negative:

• Triethanolamine (TEA): This ingredient is a very common ingredient in shaving creams, but it has been linked to cancer and can cause allergic reactions.
• Palmitic acid: This ingredient has been associated with dermatitis, which is an allergic reaction of the skin.
• Isopentane: This ingredient is a solvent that can cause headaches, nose/throat irritation, dry skin, dermatitis, and dizziness.
• Glycols (propylene, butylene, and ethylene): These are extremely harsh and corrosive chemicals that can cause dry skin, impaired hair growth, and rashes.
• Phthalates: These are chemicals used to make plastic that can increase the viscosity of a product. They can cause a variety of health problems, including reproductive issues.
• BHT: This ingredient is a preservative that can cause skin irritation and has been linked to cancer.

It is important to note that shaving products also contain other substances such as emollients, emulsifiers, and moisturizers. When choosing a shaving product, it is important to read the label and research the ingredients to ensure that they are safe and suitable for your skin.