What are the regulations for cosmetic packaging bottles design?

Traditional design through changes in package shape, color, bottle stickers, and other elements. Generally, the packaging design of series products can adopt the following combinations:
①The same container shape and different container colors This design can use cosmetics with similar effects but other use times. For example, for morning cream and night cream of the same series, two different container colors are usually used to distinguish the concept of time.
②The same container shape and color. A bottle sticker with the same design style, but with one or more design elements on the bottle sticker changed and implemented. This design scheme is often used for cosmetic series with the same function but different ingredients. For example, for cosmetics of the same fruit series, because they all use fruit formulas, they use the same design style of containers. Still, the fruit formulas are divided into pomegranate, lemon, tomato, and other formulas, so you can draw corresponding fruit pattern bottle stickers to distinguish them.
③ Containers with complementary shapes Most of the products that implement this design plan are products with auxiliary functions. For example, the same series of shampoos and conditioners, in order to reflect the unity two, and suggest that consumers should use them in a set to increase sales, usually the packaging of the two will be designed as a whole, combined into one New overall shape.